Timeline of key events:

Timeline of key events: March 2011: Anti-government protests broke out in Deraa governorate calling for political reforms, end of emergency laws and more freedoms. After government crackdown on protestors, demonstrations were nationwide demanding the ouster of Bashar Al-Assad and his government. July 2011: Dr. Nabil Elaraby, Secretary General of the League of Arab States (LAS), paid his first visit to Syria, after his assumption of duties, and demanded the regime to end violence, and release detainees. August 2011: LAS Ministerial Council requested its Secretary General to present President Assad with a 13-point Arab initiative (attached) to resolve the crisis. It included cessation of violence, release of political detainees, genuine political reforms, pluralistic presidential elections, national political dialogue with all opposition factions, and the formation of a transitional national unity government, which all needed to be implemented within a fixed time frame and a team to monitor the above. - The Free Syrian Army (FSA) was formed of army defectors, led by Col. Riad al-asaad, and backed by Arab and western powers militarily. September 2011: In light of the 13-Point Arab Initiative, LAS Secretary General's and an Arab Ministerial group visited Damascus to meet President Assad, they were assured that a series of conciliatory measures were to be taken by the Syrian government that focused on national dialogue. October 2011: An Arab Ministerial Committee on Syria was set up, including Algeria, Egypt, Oman, Sudan and LAS Secretary General, mandated to liaise with Syrian government to halt violence and commence dialogue under the auspices of the Arab League with the Syrian opposition on the implementation of political reforms that would meet the aspirations of the people. - On October 26, the Ministerial Committee held discussions in Damascus with President Assad. - The establishment of the Syrian National Council (SNC) in Istanbul, the first opposition coalition of different groups, but failed to gain international recognition because of deep divisions. November 2011: Syrian government agreed to implement a new Arab Action Plan (attached) endorsed by LAS Ministerial Council to end all acts of violence, release detainees, withdraw Syrian military and armed forces from cities, and ensure freedom of movement for journalists and observers throughout the country. -LAS Ministerial Council suspended the membership of Syria (November 16), and imposed economic sanctions (November 27) and some member states withdrew their ambassadors from Damascus, as it failed to comply with the Action Plan. December 2011: Negotiations with Damascus were resumed and an agreement is finally reached on the implementation of the Action Plan. LAS Observer Mission was deployed in Syria to monitor the implementation of the plan (December 24). - The Mission later submitted a report (attached) covering the period from 24 December 2011 to

18 January 2012 in accordance with the mandate conferred by the protocol concluded between the Syrian government and LAS. The report was divisive among the members of the Arab League, as it blamed both the regime and the opposition for the violence. January 2012: LAS Ministerial Council adopted resolution 7444 (attached) which called on the Syrian President to immediately hand over power to his deputy in order to begin the process of a political transition, which would include negotiations with the opposition, the formation of a national unity government, and the holding of elections. The resolution also, requested the Chair of the Arab Ministerial Committee and the Secretary General to brief the United Nations Security Council on the developments and get it to endorse the plan. - On January 22, Saudi Arabia withdrew its monitors, followed by the other GCC members on January 24. - On January 28, the Secretary-General of LAS announced the suspension of the activities of the observer mission, given the serious deterioration of the security situation. - On January 31, Sheikh Hamad bin Jassim bin Jabr Al-Thani, Prime Minister and Minister for Foreign Affairs of the State of Qatar, Chair of the Arab Ministerial Committee and Dr. Nabil Elaraby, Secretary General of the League of Arab States briefed the Security Council (attached) on Arab efforts and called on the council to adopt a draft resolution submitted by Morocco, supporting Arab League resolution 7444 (which called on the Syrian President to hand over power to his deputy) February 2012: - On February 4, Russia and China vetoed a draft Security Council resolution (attached), tabled by Morocco (the Arab member of the Security Council) and others. - On February 12, the Arab League adopted its resolution 7446 (attached), practically transferring the file to the United Nations Security Council. - On February 16, the issue was taken to the General Assembly, which adopted its Resolution 66/253, calling-among other things- for the appointment of a Special Envoy. - On February 23, former United Nations Secretary-General Kofi Annan was appointed as the Joint Special Envoy (JSE) of the United Nations and the League of Arab States on the Syrian crisis, to facilitate a peaceful Syrian-led and inclusive political solution. - On February 24, and upon the initiative of President Sarkozy of France, the first meeting of the Group of Friends of the Syrian People was held in Tunis, with the participation of more than 60 countries and representatives from the United Nations, the League of Arab States, the European Union, the Organization of Islamic Cooperation, the Arab Maghreb Union and the Cooperation Council for the Arab Gulf States to discuss the worsening situation in Syria. The group noted the Arab League s request to the United Nations Security Council to issue a resolution to form a joint Arab-UN peacekeeping force following a cessation of violence by the regime, and called on LAS to convene a meeting of all disparate opposition groups to agree on a clear statement of shared principles for a transition in Syria. The meeting recognized the SNC as a legitimate representative of Syrians seeking peaceful democratic change. Text of the Conclusions of the Meeting. March 2012: The SNC formed a military council to organize and unify all armed resistance. - The JSE, Kofi Anan, submitted a six-point peace plan to the UN Security Council (which the council adopted in April in its resolution 2042), that called for commitment to a Syrian-led

political process, achieve an effective United Nations supervised cessation of armed violence in all its forms by all parties, ensure provision of humanitarian assistance, intensify the release of arbitrarily detained persons, ensure freedom of movement for journalists and respect the freedom of demonstrating peacefully. It was later approved by the Syrian government, and the opposition remained skeptical. April 2012: United Nations Supervision Mission in Syria (UNSMIS) was established by United Nations Security Council resolution 2043 (attached) initially for a 90-day period, to monitor a cessation of armed violence in all its forms by all parties and to monitor and support the full implementation of the Joint Special Envoy s six-point plan on ending the conflict in Syria. June 2012: The Action Group for Syria, with the participation of the Secretary Generals of the United Nations and the League of Arab States, the Foreign Ministers of China, France, Russia, United Kingdom, United States, Turkey, Iraq, Kuwait, Qatar and the European Union High Representative for Foreign and Security Policy, chaired by the JSE, met in Geneva and adopted the Geneva Final Communique (attached) which called for the establishment of a transitional governing body, with full executive powers, as part of the agreed principles and guidelines for a Syrian-led political transition. July 2012: The Syrian Opposition meeting was held under the auspices of LAS in Cairo, and reached an agreement on a national compact and a detailed transition plan. The two documents complemented the guidelines and principles laid out by the Action Group in Geneva. August 2012: UNSMIS mandate came to an end owing to an intensification of armed violence and use of heavy weapons. - Prime Minister Riad Hijab defected, and US President Obama's first direct threat of force against Syria, if Assad s regime deploys or uses chemical or biological weapons, calling such action a "red line" for the US. - Joint Special Envoy, Kofi Annan announced his resignation because of the Security Council failure to reach binding resolutions; Lakhdar Brahimi succeeded Annan as the Joint Special Representative of the United Nations and the League of Arab states for Syria (JSR). September 2012: Egypt hosted the high level preparatory meeting of the regional Quartet on Syria on September 10, which included Turkey and Saudi Arabia key backers of the Syrian Revolution, and Iran the major supporter of al-assad regime, in an initiative to bring together regional powers to voice their positions on how to end the Syrian conflict. - On September 17, the Quartet s ministerial meeting took place in Cairo; Saudi Arabia opted out while Iran proposed a peace plan which called on all parties to cease violence and stop all financial and military support to the opposition, and suggested the deployment of observers from the quartet s nations to Syria. The participants failed to reach an agreement. October 2012: a four-day ceasefire attempt was announced towards late October, in respect to Eid al-adha Holiday, which was breached on the first day in Homs, Aleppo and Damascus. November 2012: National Coalition for Syrian Revolutionary and Opposition Forces (SOC) was formed in Qatar, responding to repeated calls from their Western and Arab supporters to create a

cohesive and representative leadership, it excluded Islamist militias. December 2012: US, Britain, France, Turkey and Gulf states formally recognized SOC as "legitimate representative" of the Syrian people. January 2013: the Emir of Kuwait hosted the first pledging conference on Syria, international donors pledged more than $1.5bn to help civilians affected by the conflict in Syria. March 2013: LAS Ministerial Council adopted resolution 7595 (attached) to recognize SOC as the sole legitimate representative of the Syrian people and called on the SOC to establish an executive body to take up Syria s seat. April 2013: Abu Bakr al-baghdadi, leader of the Islamic State, released a recorded audio message announcing Jabhat al-nusra as an extension of al-qaeda in Iraq and Syria. The leader of al-nusra, Abu Mohammad al-joulani, refused the merger. Divisions among the jihadists emerged. - Hezbollah s involvement deepened when it led the ground assault on Al-Qusayr, a Sunni town in Homs province by the Lebanese border. August 2013: The Assad regime was accused of using chemical weapons in Eastern Ghouta to kill hundreds of civilians. The government denied using chemical weapons. President Obama sought congressional authorization for the use of force. September 2013: UN Security Council unanimously adopted resolution 2118 (attached) requiring the Syrian regime to dismantle its chemical weapons arsenal by mid-2014, and avoid military strikes. December 2013: US and Britain suspended "non-lethal" support for rebels in northern Syria after reports Islamist rebels seized some bases of Western-backed Free Syrian Army. January 2014: the Geneva II Conference on Syria was held in Montreux on January 22, and attended by 37 states, 4 organizations and both Syrian parties. Iran was invited by SG Ban Ki- Moon on January 19, the Opposition declared its refusal to attend if Iran was not excluded, the US viewed Iran's invitation "as conditioned on Iran's explicit and public support for the full implementation of the Geneva Communique"; Iran refused any preconditions to the talks, and refused to endorse the Geneva Communique specially the transitional governing body. February 2014: two rounds of negotiations to discuss: 1- ending violence and 2-combating terrorism, 3-transitional governing body, national institutions, and 4- national reconciliation and national debate. The Syrian government refused to discuss a transitional government and insisted on discussing combating terrorism. The talks came to a halt. May 2014: JSR Brahimi announced his resignation because of the lack of progress and failure to agree on an agenda. - Iran proposed a political settlement of four points; a comprehensive cease-fire at national level, forming a national unity government consisting of the regime and the internal Syrian opposition,

by transferring presidential powers to the government whereby the government will enjoy wideranging powers in years to come, and preparation for presidential and parliamentary elections. - Syrian rebels withdrew from the Old City of Homs, under an Iranian brokered deal and facilitated by the UN, after three years of Syrian government bombardment and siege. June 2014: President Assad held presidential elections, he was re-elected for another seven-year term allegedly winning 88.7% of the votes. July 2014: UN Secretary-General announced the appointment of Staffan de Mistura as his Special Envoy for Syria (SE)- NOT as a joint envoy with LAS. August 2014: US-led coalition began its airstrikes against the Islamic State in Iraq and expanded its strikes to Syria the following month, focusing on the city of Raqqa. September 2014: SE held his first round of consultations with concerned capitals, since taking up his office, it included his a visit to Damascus where he met with President Assad, senior officials and the tolerated internal Syrian opposition. October 2014: SE focused on establishing a series of local ceasefires, freeze zones, starting with Aleppo, which aimed at the de-escalation of violence and allowance of the return of normalcy to it. February 2015: SE briefed the Security Council members on the 17th, announcing Syria's willingness to halt all aerial bombardment over Aleppo for a period of six weeks. It was not clear when would the freeze go into effect, reporting that a date would be announced from Damascus. June 2015: Egypt hosted the second Syrian Opposition meeting in Cairo, which excluded the National Coalition and announced a new road map to resolve the crisis which did not abolish Assad's government. July 2015: SE announced that his office would facilitate intra-syrian working groups to generate a Syrian-owned framework document on the implementation of the Geneva Communiqué. Main themes of the groups were Safety and Protection for All, Political and Constitutional Issues, Military and Security Issues, and Public Institutions, Reconstruction and Development. September 2015: Russia conducted its first airstrikes against IS in Syria. The US and the Syrian Opposition claim it is targeting rebel-held areas instead. October 2015: First meeting of International Syria Support Group (ISSG) took place in Vienna, it included China, Egypt, the EU, France, Germany, Iran, Iraq, Italy, Jordan, Lebanon, Oman, Qatar, Russia, Saudi Arabia, Turkey, United Arab Emirates, the United Kingdom, the United Nations, and the United States. They agreed on a nine-point plan, but still had substantial divisions on the future of Assad. It was the first time Iran and Saudi Arabia were brought to the same table. November 2015: Second meeting of the ISSG was held in Vienna adding LAS to its members.

They set a time frame to prepare for a parallel ceasefire and political process by January 2016 that would lead to credible, inclusive and non-sectarian governance within six months, followed by the drafting of a constitution and elections within 18 months. Jordan was tasked to develop a list of groups and individuals identified as terrorists, and Saudi Arabia to hold a meeting to unify the Syrian opposition and prep for the talks with the government. December 2015: - Syrian political and armed opposition factions met in Riyadh, to agree on a common position to negotiate with Syrian government, and resulted in the formation of the High Negotiating Committee (HNC). The main Kurdish group was excluded, while Islamist hardliners such as Jaysh Al-Islam and Ahrar Al-Sham were present. - The Secretary General of the Organization of Islamic Cooperation (OIC) joined the follow-up meeting of the ISSG in New York, Saudi Arabia and Jordan briefed the group on their tasks. There was no agreement on the list of identified terrorists, especially with Russia's insistence on adding Ahrar Al-Sham to the list, which is considered pivotal to the unified Opposition bloc. - UN Security Council unanimously adopted resolution 2254 (attached) which reaffirmed the road map set out by the ISSG and urged the Support Group to apply pressure on the Syrian parties to put an immediate end to the indiscriminate use of weapons against civilians, and allow unimpeded access to humanitarian aid convoys. January 2016: the SE sent out invitations to the Syrian participants, in accordance with the parameters outlined in Security Council resolution 2254, to start on the 25 th with proximity talks and had expected to last for six months. The HNC requested assurances of goodwill from the government as precondition to beginning of talks, such as release of prisoners or lifting of sieges. February 2016: Talks were delayed and lasted two days before they were suspended for three weeks. - The ISSG met on the margins of the Munich Security Conference and decided that humanitarian access will commence same week of meeting to besieged areas, and an ISSG task force would elaborate within one week modalities for a nationwide cessation of hostilities. - The US and Russia announced the adoption of the terms for a cessation of hostilities in Syria, and proposed that the cessation of hostilities commence at 00:00 (Damascus time) on February 27, 2016. The cessation of hostilities does not apply to Daesh, Jabhat al-nusra, or other terrorist organizations designated by the UN Security Council. - The Security Council endorsed the announcement in its resolution 2268 (attached). March 2016: SE announced March 9 set as target date of resumption of talks in Geneva. On March 14, SE resumed the intra-syrian proximity talks in Geneva, which mainly discussed procedural matters to reach a shared list of principles and relied on Security Council resolution 2254 as its agenda. - SE briefed the Security Council on the cessation of hostilities which lowered overall levels of violence and more than 238,000 people had been reached with humanitarian aid. - On the same day, President Putin announced the withdrawal of most Russian forces from Syria, after it had largely fulfilled their objectives in Syria, and SE stated that it would have a positive impact on the negotiations. - On March 17, the PYD announced the establishment of a federal system in Kobane, Afrin and Cizire cantons in northern Syria, and its Constituent Assembly of the Democratic Federation of

Northern Syria-Rojava (DFNS) announced its final declaration. Both the Syrian government and other opposition affiliates denounced the plan, as well as the United States. - On March 24, the SE ended the first round by submitting a paper on the commonalities between the Syrian sides regarding the future of Syria and would help structure the next round that would address political transition. - Syrian government forces retook Palmyra from the Islamic State, with Russian air assistance. April 2016: The SE paid visits to Amman, Beirut, Damascus and Tehran ahead of the new round of talks. - The third round of proximity talks were set to start on April 13, which coincided with the parliamentary elections in the government-controlled areas in Syria. The SE met with the High Negotiations Committee delegation (Syrian Opposition) in Geneva and was expected to meet with the Syrian Government delegation within the following days. - During the 13-27 April round of negotiations, the SE developed a Mediator s Summary that identified eighteen points necessary to move forward on political transition arrangements. - on April 28, airstrikes in Aleppo on al-quds hospital supported by both Doctors Without Borders and the International Committee of the Red Cross, which killed dozens of civilians and medical personnel. May 2016: The Security Council adopted unanimously resolution 2286 (attached) which called for the protection of civilians and medical facilities during armed conflict. - On May 4, the US-Russia brokered a 48-hour ceasefire in which helped reduce the violence, and was later extended for another 72 hours. - On May 9, France held a ministerial Friends of Syria meeting in Paris Format, attended by the United States, Germany, the United Kingdom, Italy, the European Union, the United Arab Emirates, Saudi Arabia, Qatar, Turkey and Jordan, and issued a statement that called on the resumption of negotiations, unimpeded access of humanitarian assistance and the implementation of international law obligations to the protection of civilians. - Later on the same day, the United States and Russia issued a joint statement on Syria to reconfirm their commitment to intensify their efforts to implement a nationwide ceasefire and promote humanitarian assistance in accordance to security council resolution 2254. - On May 17, the fourth meeting of the ISSG took place in Vienna and reaffirmed its determination to strengthen the cessation of hostilities, to ensure full and sustained humanitarian access in Syria, and to ensure progress toward a peaceful political transition. Australia, Canada, Japan, the Netherlands and Spain joined the group. June 2016: The SE announced that the time is not yet right for a resumption of the intra-syrian talks because of the escalation of violence in Aleppo, Idlib, Latakia and other rural areas around Damascus, but the intention is to begin an official third round as soon as possible. - Riad Hijab, the Coordinator of the Opposition High Negotiations Committee, proposed a nationwide truce throughout the month of Ramadan. - On June 16, Jan Egeland Advisor to the Special Envoy for Syria announced that 16 of the 18 besieged areas have been reached since the humanitarian taskforce started in late February. - On June 21, the SE briefed the United Nations General Assembly on the situation in Syria regarding the cessation of hostilities and humanitarian assistance access, as for the resumption of talks, it is yet to be decided and the OSE currently holds technical meetings with the parties on

core issues. July 2016: - On July 6, the Syrian army declared a three-day nationwide regime of calm in respect to Eid al-fitr holidays nonetheless pro-regime forces continued to engage in clashes and airstrikes across the country, particularly near the flashpoints of Damascus and Aleppo City. - On July 14, U.S. Secretary of State John Kerry met with Russian President Vladimir Putin in Moscow to discuss a proposal for bilateral military cooperation in the Syria; The proposal calls for the establishment of a Joint Implementation Group (attached) based in Amman, Jordan to support deliberate targeting of Syrian Al-Qaeda affiliate Jabhat al-nusra and maximize independent but synchronized efforts against ISIS in Syria, according to a draft memorandum leaked by the Washington Post. - On July 25, Stephen O brien, the Under Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator, briefed the security council (attached) on the deteriorating humanitarian situation in Aleppo due to the escalation of violence over the Castello Road, the last access route in and out of eastern Aleppo, and the continuous attacks on medical facilities. O brien called on the security council not to allow turning Aleppo into another besieged area where 250,000 to 275,000 people reside, and called to establish a weekly, 48-hour humanitarian pause to enable humanitarian aid deliveries across borders. - On July 28, the Russian Minister of Defense Sergei Shoigu announced, right after the Syrian government announced it has cut off the Castello Road and encircled the city of Aleppo, setting up three humanitarian corridors in Aleppo City to allow in food and medical aid, and help people flee the besieged city; the fourth corridor would be established in northern Aleppo near the Castello Road to allow the withdrawal of armed insurgents, and appealed to the Syrian government to provide guarantees to the amnesty provided to rebels to lay down their weapons. - On the same day, Abu Mohammed al-julani, Jabhat al-nusra s Leader announced split from al- Qaeda and mentioned that its new name would be Jabhet Fateh al-sham, in order to get the group off the terrorist list and to remove the excuse used by the international community spearheaded by America and Russia to bombard and displace Muslims in the Levant: that they are targeting al-nusra Front, which is associated with al-qaida. - On July 29, the SE commented on the Russian initiative in a press stakeout, that it should take into consideration a few improvements such as putting the 48-hour humanitarian pause into place on a sustainable basis irrespective of the humanitarian corridors; and suggested to actually leave the delivery of aid through corridors to the UN and its partners ; and stressed that civilians should leave voluntarily, and given the option of leaving to areas of their own choice. August 2016: - On August 1, a Russian helicopter was downed near Saraqeb, in rebel-held Idlib province, on its way back to Russia's main air base in Hmyeim in the western province of Latakia, killing the five Russian military personnel on board. The downing of the helicopter marked the single deadliest event for Russia since its air campaign began in Syria on September 29, 2015. No group claimed the shooting down of the helicopter. - Since then, Russian warplanes conducted retaliatory airstrikes against several small oppositionheld areas in the vicinity of Saraqeb. Syrian rebels accuse Russia of using incendiary munitions while conducting airstrikes against Idlib City on August 7, suggesting that Russia intended to

achieve punitive and deterrent effects against opposition forces in the province. - In the early weeks of August, rebel forces launched a major assault, known as the battle for Aleppo, on government-held southwestern towns of Aleppo City, to break the siege, and control supply lines in the south connected to eastern Aleppo. They claimed breaking the siege and capturing Ramouseh Artillery Academy, parts of the cement plant and Khan Touman-Ramouseh road. Intense fighting between warring parties continues to claim control over previously lost vicinities. - On August 9, Russian President Vladimir Putin met with Turkish President Recep Tayip Erdogan in St. Petersburg, after the Turkish President officially apologized for the downing of a Russian military aircraft on June 27, 2016, and announced during a press conference that they discussed lifting of Russia s ban on imports of Turkish products, resumption of charter flights, the Turkish Stream project, Syrian settlement, and anti-terrorism efforts. - On August 10, Lieutenant-General Sergei Rudskoi, a senior Russian Defence Ministry official, announced a daily three-hour ceasefires in Aleppo, starting August 11, to allow humanitarian convoys enter the city safely, and would run from 10 a.m. to 1 p.m. local time. - On August 16, the Russian Ministry of Defense announced that Russian aircrafts took off from Iranian airbase Hamedan to carry out airstrikes on ISIS and Jabhat al-nusra-held facilities in the provinces of Aleppo, Idlib and Deir ez-zour. - On August 18, the SE adjourned the HTF meeting as humanitarian convoys could not reach any of the besieged towns during the month, and called for at least a 48 hour humanitarian pause in Aleppo to deliver UN humanitarian assistance, through the Castello Road, to all parts of Aleppo City. - Also, on August 18, the Syrian government forces, unprecedentedly, launched strikes against Kurdish forces in Hasakeh in Northern Syria, after pro-government National Defense Forces (NDF) were engaged in clashes with the military wing of the Kurdish Workers Party, known as Asayish. The Syrian government claimed that Asayish had escalated their acts of provocation attacking state establishments, stealing oil and cotton, disrupting examinations, carrying out abductions, and causing a state of chaos and instability, in addition to targeting positions of the Syrian Arab Army which required a suitable response by the Army as it targeted the sources of artillery fire and the gatherings of armed elements responsible for these criminal actions. - On August 19 th, while the Kurdish fighters pushed back government forces and their allies, the Pentagon threatened to shoot down Syrian government aircrafts as they pose a threat to the US Special Forces deployed in the Kurdish People s Protection Units (YPG) area. - On August 21, it was announced that a truce agreement had been reached between YPG and NDF, through Russian mediation, to start on August 21, 2016 at 17:00, which involved evacuating the wounded and transporting them to hospitals in Qamishli, and restore the situation to how it was prior to the clashes and hold talks on August 22 to resolve the remaining unresolved issues. - On August 22, most likely the ceasefires agreement failed as fighting escalated. - On August 24, Turkey and the International Coalition Air Forces launched Operation Euphrates Shield offenses to support the Free Syrian Army aligned with U.S.-backed Syrian Democratic Forces SDF against IS militants in Jarablus, in northern Syria. - On August 26, U.S. Secretary of State John Kerry and Russian Foreign Minister Sergei Lavrov, addressing a joint press conference after their meeting in Geneva, announced that they failed to reach a breakthrough deal on military cooperation and a nationwide cessation of hostilities in Syria, saying they still have issues to resolve before an agreement could be announced.

- On August 27, Kurdish militias targeted Diyarbakir airport in southeast Turkey, near the borders with Syria. Turkey retaliated by warplanes and artillery on targets held by Kurdishbacked forces the following day, despite US pentagon s criticism of the fighting. September 2016: - On September 4, Turkish Prime Minister Binali Yildrim announced that Turkish military forces and Ankara-backed Free Syrian Army (FSA) had successfully purged the border region, from Azaz to Jarablus, from terrorist organizations. - On September 9, the US and Russia reached a deal which called for a nationwide ceasefire in Syria, and unimpeded humanitarian access to all besieged areas starting on September 12 th. If sustained for seven continuous days, the U.S. and Russia would establish a Joint Implementation Center (JIC) in order to share intelligence and coordinate airstrikes against both ISIS and Jabhat Fateh al-sham (formerly Jabhat al-nusra). - On September 21, the cessation of hostilities deal was implemented with regular violations, while the Syrian government continued to block humanitarian access to opposition-held districts of Eastern Aleppo City despite the agreement. - On September 17, the US-led coalition accidentally launched an air strike on Syrian government forces in Deir ez-zour. - On September 19, a UN humanitarian convoy was shelled near Urum al-kubra near Aleppo, killing 20 humanitarian aid workers and drivers, and destroying 18 out of 31 trucks. The US blamed Russia and the Syrian government for the attack; the latter declared unilaterally the end of the ceasefire agreement. - On September 20, the UN temporarily suspended its humanitarian aid to Syria after the attack, while international powers failed to reach a consensus to restore the ceasefire during an acrimonious UN Security Council Meeting on September 21st as well as two separate meetings of the International Syria Support Group on September 20 and September 22. - On September 22, the Syrian government announced a new military offensive in the rebel-held eastern Aleppo, and further escalation in a bombing campaign by Russian and Syrian airstrikes that had already intensified the day before. - On September 25, the Security Council Meeting discussed the recent escalation of violence in Aleppo after the Syrian government announced its intention to retake all of Aleppo City, and the SE called on the Security Council to to press for a cessation of violence, and for the protection of civilians, and the civilian infrastructure; secondly to press for weekly 48-hour pauses in the fighting to ensure that the United Nations and its partners can reach eastern Aleppo, without preconditions from either the Government or the Opposition; and thirdly to press for medical evacuations of urgent cases. - On September 27, the Syrian government launched a large scale ground offensive in eastern Aleppo, and state media announced that it recaptured the central district of Al-Farafirah northwest of the Aleppo Citadel. - On September 29, the YPG set conditions to participate in operations to seize IS-held Raqqa City: the US provides arms to the YPG, recognizes its autonomy of the Federation of Northern Syria, and ensures that the Syrian Kurds are officially invited to participate in peace talks. October 2016: - On October 1, continuous airstrikes in eastern Aleppo damaged a major hospital codenamed M10, which was partially closed because of the raids.

- On October 2, Stephen O brien, the Under Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator, urged warring parties and their supporters to bring about a cessation of all hostilities, a medical evacuation system for eastern Aleppo, and regular unimpeded humanitarian access to eastern Aleppo, and he reiterated his plea to the Security Council for a 48-hours weekly humanitarian pause in fighting, at the very least. - In an official statement, the Syrian Army offered amnesty to fighters and their families to leave Aleppo under guarantee of safe passage to other rebel-held areas, after the Syrian regime forces recaptured strategic areas on the northern outskirts of the city. - On October 3, the EU announced an emergency humanitarian initiative for Aleppo, in cooperation with the United Nations and civil society organizations, in order to facilitate the urgent delivery of basic life-saving assistance to civilians in eastern Aleppo, and ensure medical evacuations with focus on women, children and the elderly. The EU has mobilized 25 million euros to support its humanitarian partners response to cover medical, water and sanitation, and food assistance in Aleppo. The HNC issued a statement welcoming the European initiative to protect civilians in Aleppo. - The Security Council began negotiations over a draft resolution, circulated by France and Spain, which demanded all parties to the Syrian conflict implement and ensure full implementation of cessation of hostilities, including an end to all aerial bombardments, and called on the US and Russia to undertake joint efforts to stabilize the situation in Syria, with special measures for the Aleppo region, as well as the UN Secretary-General to propose options for a UN-supervised monitoring mechanism of the ceasefire and to take further measures in case of non-compliance of any party, without invoking chapter 7 of the UN Charter. The French Foreign Minister Jean-Marc Ayrault headed to Moscow and Washington to push for a vote on the draft resolution. - The United States suspended talks with Russia on trying to end the violence in Syria and accused Moscow of not complying with its commitments under the ceasefire agreement and would withdraw all personnel that were dispatched to prepare for military cooperation with Russia. - On October 4, Prince Zeid Ra ad, the UN High Commissioner for Human Rights, warned over the use of incendiary weapons in Syria, and demanded bold initiatives such as limiting the use of the veto by the permanent members of the Security Council to refer the situation in Syria to the International Criminal Court (ICC). Russia rejected Zeid s call. - The Russian Defense Ministry declared its deployment of S-300 missile system to its Tartus naval base in Syria. - On October 6, the SE offered in a press conference to escort up to 1000 al-nusra fighters to bring an end to the bombardment by Russian and Syrian forces to Idlib or anywhere else of their choice. While the Russian Defense Ministry announced it would shoot down US-led coalition jets if the US launches airstrikes against pro-government forces in Syria, after American officials had discussed using limited airstrikes to force government forces to halt its raids on Aleppo. - On October 7, Russia called for a Security Council emergency meeting to hear the SE s briefing (attached) on the situation in Aleppo, while the Russian Parliament ratified Moscow s deal with Syria on its indefinite deployment of forces. - On October 8, the Security Council held a meeting on Aleppo, and voted on the Russiandrafted resolution calling for the revival of the ceasefire deal, without mention of ending military fights in the city, and on the French-drafted resolution. The French draft received eleven votes in favor, China and Angola abstained, while Russia and Venezuela voted against. The Russian text

only received four votes in favor of China, Egypt and Venezuela, Angola and Uruguay abstained, while the remaining nine council members voted against. - On October 9, France announced its intention to call the ICC for war crimes investigation in Syria, and shall contact the ICC Prosecutor on how to launch these investigations, putting into consideration that the only way is through the Security Council referral, which had been vetoed before by Russia in May 2014. - On October 13, the Deputy Special Envoy for Syria Ramzy Ezzeldin Ramzy confirmed the Syrian Government s approval of the October aid plan and for convoys to reach 25 of 29 besieged and hard-to-reach areas across Syria, but not to eastern Aleppo and three parts of the rural Damascus province. - On October 15, US Secretary of State John Kerry hosted a meeting on Syria in Lausanne, with the participation of Russian Foreign Minister Sergei Lavrov and seven foreign ministers from the region, from Iran, Iraq, Saudi Arabia, Turkey, Qatar, Jordan and Egypt, with the presence of the SE. The meeting failed to reach a joint statement on how to end the bombardment of Aleppo or on the aid delivery to the besieged towns. - On October 16, the UK s Foreign Secretary Boris Johnson held a meeting with his US, French and German counterparts and like-minded Gulf Arab states on the Syrian conflict in London. The UK and the US announced their consideration of imposing more sanctions against Russia and the Syrian Government to halt their ongoing raids on Aleppo. - On October 17, the European Council condemned the Syrian regime and Russia for their deliberate and indiscriminate bombardment of civilians and infrastructure in Eastern Aleppo, and called for a monitored cessation of hostilities, lift of sieges, and a nationwide sustainable humanitarian access. - On October 18, the Russian Minister of Defense Sergei Shoigu announced the cease of Russian and Syrian airstrikes on Aleppo to hold an 8-hour humanitarian pause on October 20th, in order to allow civilians and medical evacuations through six humanitarian corridors, and expected militants would withdraw with their weapons through two corridors, one via the Castello Road and the other near the souq al-hai area in the south of the city. It was later announced that the eight-hour pause will be extended to eleven hours for four days. The armed opposition groups (AOGs) rejected the proposal in a joint statement claiming that the initiative came at the same time as forced displacement operations are being carried out by the Assad regime in the Damascus suburbs of al-mouadamiya, Qudsiya and al-hama, and before that in Daraya. - On October 20, in conclusion of the EU summit, the EU failed to reach an agreement on imposing sanctions on Russia for the escalation of violence in Aleppo, and stated that the EU is considering all available options should the current atrocities continue. The unilateral ceasefire took effect, and the Syrian Army declared that it would last for three days while artillery exchanges erupted around a crossing point near the rebel-controlled Bustan al-qasr district shortly after the pause began. The Secretary-General and the SE briefed the General Assembly in an informal session on the situation in Syria, in response to an initiative led by Canada, after the Security Council failed to take action to end the aerial bombardment on Aleppo and revive peace efforts. - On October 21, the United Nations Human Rights Council held a special session on the deteriorating situation of human rights in Aleppo, upon the request of Britain (letter attached) that was submitted on behalf of a core group of 11 Western and Arab states. The Council adopted a resolution by a 24 in favor vote, seven against and 16 abstentions. It urged the immediate implementation of the cessation of hostilities, and demanded that the regime and its

allies put an immediate end to all aerial bombardments of and military flights over Aleppo city. The Council demanded that all parties, in particular the Syrian authorities and its supporters, promptly allowed rapid, safe, unhindered and sustained humanitarian access, including across conflict lines and borders. The Council further requested the Independent International Commission of Inquiry on the Syrian Arab Republic to conduct a comprehensive, independent special inquiry into the events in Aleppo, and identify all those responsible for alleged violations and abuses of international human rights law. It further requested the Commission of Inquiry to support efforts to ensure that perpetrators of alleged abuses and violations be held accountable, and to provide a full report of the findings of its special inquiry to the Human Rights Council no later than its thirty-fourth session. - On October 22, the humanitarian pause expired without any evacuations made and without further renewal despite the UN request. No medical evacuations had been made as no security guarantees had not been granted as requested by the UN. - On October 23, Turkey intensified its strikes targeting IS militants and Kurdish YPG forces in the town of al-bab, in an attempt to sweep them away from its borders. The Turkish-backed FSA gained control over three areas of Tuways, al-gharz and Tlatinah south of Akhtarin in northern Aleppo two days later. - On October 25, Russian Deputy Foreign Minister Mikhail Bogdanov stated Moscow s willingness to restore the ceasefire in Aleppo and that the Western-backed opposition forces should be separated from terrorist groups in order to be able to move forward; after the UN had blamed all parties for the failure of evacuating injured people in Eastern Aleppo during the threeday ceasefires and called for a permanent and comprehensive ceasefire so that life-saving humanitarian activities, including medical evacuations, can resume, meanwhile the Syrian Ambassador to Moscow ruled out any opportunity to restore the ceasefires. - On October 26, a school in the village of Haas, in rebel-held Idlib, was hit by a raid of airstrikes, causing the death of twenty-two children and six teachers. The UN Secretary-General called for an immediate investigation on this attack, as it could amount as war crimes if deliberate. Russia denied its responsibility and claimed that the damage was not consistent with an airstrike. - On October 27, Virginia Gamba, the head of the UN-OPCW Joint Investigative Mechanism, presented the mechanism s findings to the Security Council. The report indicated that of the nine cases the JIM investigated, the Syrian regime used chlorine gas against civilians in three cases and the IS used mustard gas in one case. In the remaining five cases, the JIM investigated allegations that the government dropped chlorine bombs in rebel-held areas. While the JIM could not make a conclusive determination in three of these five cases, it was able to establish that government airstrikes had occurred and the presence of a toxic substance, but it was unable to fully determine the link between the two, or the actors responsible. Russian Ambassador Vitaly Churkin questioned the JIM s findings, and expressed reservations over the US-draft resolution to extend the mandate of the mechanism for another year, which would end on 31 October 2016. - The EU added ten top Syrian officials to its sanctions list who are held responsible for violent repression against the civilian population in Syria. - On October 28, Syrian rebels relaunched Aleppo counter-attack aiming to break the siege imposed on Eastern Aleppo. The factions included the FSA and Jaish al-fath targetting government-held Western Aleppo. - Syrian Foreign Minister Walid Muallem met with his Russian and Iranian counterparts in Moscow to discuss counterterrorism, the cessation of hostilities and improvement of

humanitarian operations, and the resumption of the intra-syrian talks. The three ministers held a joint press conference following their meeting. - On October 30, SE condemned Syrian rebels for the indiscriminate shelling of civilian areas in Western Aleppo, raising the number of casualties in the last 48 hours. - On October 31, the Security Council extended the mandate of the UN-OPCW JIM until November 18, 2016. November 2016: - On November 1, in a teleconference with the leaders of the Russian Armed Forces, Russian Defense Minister Sergei Shoigu mentioned that Russia had halted air strikes on eastern Aleppo for 16 days, following western criticism over a Russian-Syrian government assault that killed civilians and destroyed infrastructure. - On November 2, DM Shoigu announced that it would enforce a 10-hour humanitarian pause in Aleppo on November 4, to allow civilians and fighters to exit the city through eight safe corridors. - On November 4, despite the announced unilateral ceasefire in Aleppo, there were no sign of civilians or fighters leaving the city, and opposition fighters vowed to continue fighting to break the siege. - On November 6, the SDF declared the launch of Operation Wrath of the Euphrates in the IS capital of Raqqa, which aimed at surrounding and isolating the city as an initial phase, in coordination with the US-led coalition airstrikes. The SDF had rejected any Turkish role to liberate the city. - On November 8, the Russian Defense Minister Shoigu announced that the first attack from the Admiral Kuznetsov, the aircraft carrier, and heavily armed escort ships were to bomb rebel positions in Aleppo. - On November 10, Jan Egeland, Advisor to the Special Envoy for Syria, declared in a press stakeout following the weekly HTF meeting that Eastern Aleppo had run out of food rations, and that the UN had proposed an initiative of four elements which included delivery of food and medical supplies, medical evacuations and access for health workers. - On November 11, the OPCW Executive Council condemned all parties for the use of chemical weapons in Syria, after voting on a US-tabled text in a closed session. The text was supported by 28 members, including Germany, France, the United States and Britain; it was opposed by Russia, China, Sudan and Iran, and there were nine abstentions. - On November 15, Russia launched its major operation targeting the IS and Jabhat al-nusra s positions in Idlib and Homs provinces. Heavy airstrikes and barrel bombs pounded Eastern Aleppo after the pause declared by Russia and the Syrian Government on October 18. It is considered the first mission operated from the aircraft carrier Admiral Kuznetsov. - The Third Committee of the UN General Assembly adopted a draft resolution tabled by Saudi Arabia on the human rights situation in Syria, by a vote of 116 in favor, to 15 against with 49 abstentions. It called upon the Syrian regime and the IS to cease using chemical weapons, and stop their attacks on civilians. - On November 17, the UN Security Council adopted the US-draft resolution to extend the mandate of the UN-OPCW Joint Investigative Mechanism to 18 November 2017. - On November 20, Syrian Foreign Minister Walid Muallem held talks with the SE in Damascus, on the latest escalation of violence, the targeting of medical facilities and infrastructure, and the humanitarian initiative in Eastern Aleppo. The UN proposal of the withdrawal of al-nusra

fighters while maintaining the opposition s local administration of Eastern Aleppo; the proposal was rejected by the Syrian Government and called it a violation of "national sovereignty". - On November 23, the French Minister of Foreign Affairs Jean Ayrault announced that France would hold a meeting on Syria early December 2016. - On November 24, Jan Egeland Advisor to the Special Envoy for Syria briefed the press on the HTF meeting and the assistance deliveries of the month of November, not being able to reach besieged areas because of the absence of government approvals for convoys to enter and the escalation of violence. Egeland stated that the UN had received written approvals of the AOGs in eastern Aleppo and Russian support of the UN four-point plan, and still waiting for the government s approval. - On November 27, the rebels in Khan al-shih town, in the outskirts of Damascus, handed in their weapons, as part of a local agreement with the Syrian government to withdraw to rebel-held Idlib province, so as government siege would be lifted. It was the only town not under government control on a major supply route from Damascus to Quneitra, in southern Syria. - On November 29, Egypt, New Zealand and Spain put in blue their draft resolution calling to put an end to all attacks on Aleppo, and allow unimpeded humanitarian access for the period of 7-days with consideration of further extension. The draft was later vetoed on 5 December by Russia and China, Venezuela voted against, and Angola abstained. It is Russia s sixth veto on a Syria draft resolution, and China s fifth veto. - After the Acting High Representative for Disarmament Affairs Kim Won-soo briefed Council members during Syria s chemical weapons consultations; the P3 announced they would circulate a draft resolution to impose sanctions on Syria for its use of chemical weapons against its own population. - On November 30, upon the request of France and the UK to hold an emergency meeting on Aleppo, SE Staffan de Mistura, USG Emergency Relief Coordinator Stephen O brien and UNICEF Regional Director Geert Cappelaere briefed the Security Council on the situation in Aleppo, who agreed on the growing number of civilians fleeing eastern Aleppo and the dire need for safe humanitarian access. December 2016: - On December 1, ten AOGs announced the formation of Jaysh Halab in Eastern Aleppo, in an attempt to unite their efforts to lift the siege and restore the districts where the pro-government militias took over in northeast and east Aleppo. It was led by Abu Abdul Rahman Nour, a senior commander in Jabhat al-sham. While Jan Egeland, Advisor to the Special Envoy for Syria, and the SE briefed the press on the humanitarian situation in Aleppo after the HTF meeting; they mentioned that over 400,000 IDPs are in west Aleppo, and UN convoys reached reached all towns under the Four-Towns Agreement, including Madaya, al-foua and Kafraya, and Zabadani, and that the December Plan was yet to be approved by the Syrian government. - On December 3, the Syrian armed forces and its supporting militias advanced into east Aleppo, taking over 60 percent of the city that was once under rebel control since mid-2012. More than 80,000 civilians fled the area since the beginning of the regime s offense on November 15. - On December 7, AOGs called for a five-day ceasefire in Aleppo, and medical and civilian evacuations without mentioning the withdrawal of their fighters as demanded by Moscow and Damascus. Meanwhile, U.S. Secretary of State John Kerry met with Russian Foreign Minister Sergei Lavrov in Germany to discuss the evacuation of opposition-held districts of Eastern Aleppo, and no agreement was reached. While leaders of Canada, France, Germany, Italy, the