Destruction of Syria's chemical weapons

Part of a series on the Syrian civil war
Syrian peace process
History Arab League initiative I 2011 Arab League initiative II 2011-12 Churkin peace plan 2012 Kofi Annan peace plan (Geneva I) 2012 Lakhdar Brahimi peace plan 2012 U.S.–Russia peace proposal (2013) 2013 Geneva II Mideast peace conference 2014 Staffan de Mistura peace plan 2015 Zabadani agreement 2015 Vienna talks 2015 Geneva III 2016 US-Russia ceasefire proposal (2016) 2016 Geneva IV 2017 Idlib demilitarization 2018 Northern Syria Buffer Zone 2019 Second Northern Syria Buffer Zone 2019 Syrian Constitutional Committee 2019
Primary concerns Bashar Assad presidentship Ba'athist government Opposition government Secularism in Syria Human rights Refugees Humanitarian aid Sectarianism
Secondary concerns Electricity supply Water supply Control of oil Situation in Aleppo Siege of Madaya
International brokers Peace envoy for Syria (United Nations) UN Office for Coordination of Humanitarian affairs Arab League
Proposals Federalization of Syria Destruction of Chemical Weapons Constitution amendment: Constitution of Syria Constitution of Syrian Opposition Constitution of Rojava Safe Zones
Projects Friends of Syria Group Free Syrian University Raqqa Is Being Slaughtered Silently
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The destruction of Syria's chemical weapons began on 14 September 2013 after Syria entered into several international agreements which called for the elimination of Syria's chemical weapon stockpiles and set a destruction deadline of 30 June 2014.^[1][2][3] Also on 14 September 2013, Syria acceded to the Chemical Weapons Convention (CWC) and agreed to its provisional application pending its entry into force on 14 October.^{[4][5][6][7][8]} Having acceded to the CWC, the Organisation for the Prohibition of Chemical Weapons (OPCW) Executive Council on 27 September approved a detailed implementation plan that required Syria to assume responsibility for and follow a timeline for the destruction of Syrian chemical weapons (such as sarin) and Syrian chemical weapon production facilities.^[9] Following the signing of the Framework Agreement on 14 September 2013 and after the OPCW implementation plan, on 27 September the United Nations Security Council unanimously adopted Resolution 2118 which bound Syria to the timetable set out in the OPCW implementation plan. The joint OPCW-UN mission was established to oversee the implementation of the destruction program.

The OPCW began preliminary inspections of Syria's chemical weapons arsenal on 1 October 2013,^[10] and actual destruction began on 6 October.^[11] Under OPCW supervision, Syrian military personnel began "destroying munitions such as missile warheads and aerial bombs and disabling mobile and static mixing and filling units".^[12] The destruction of Syria's declared chemical weapons production, mixing, and filling equipment was successfully completed by 31 October deadline,^[13] but the destruction of chemical weapon stockpiles fell well behind schedule, which had been scheduled for completion by 6 February 2014.^[14] Only on 23 June 2014, were the remaining declared chemicals shipped out of Syria for destruction.^[15] The destruction of the most dangerous chemicals was performed at sea aboard the Cape Ray, a vessel of the United States Maritime Administration's Ready Reserve Force, crewed with U.S. Navy and civilian merchant mariners. The actual destruction operations, performed by a team of U.S. Army civilians and contractors, destroyed 600 metric tons of chemical agents in 42 days.^[16] By 18 August 2014, all of the remaining declared and surrendered chemicals had been destroyed offshore. On 4 January 2016, the OPCW stated that destruction was completed,^[17] though since then the use of chemical weapons on numerous occasions by the Syrian military has been verified.

The agreement by Syria to destroy its chemical weapons arose at a time when the United States and France headed a coalition of countries on the verge of carrying out air strikes on Syria in response to the 21 August 2013 Ghouta chemical-weapon attacks.^[18] To avoid a military intervention, on 14 September 2013, the United States, Russia and Syria agreed to the "Framework for Elimination of Syrian Chemical Weapons".^[5] Chlorine, a common industrial chemical, is outside the scope of the disarmament agreement; however, its use as a poison gas would violate the Chemical Weapons Convention, which Syria joined in 2013. Various parties, including Western governments, have accused Assad of conducting illegal chlorine attacks since 2014.^[19]

Western officials, such as British Ambassador Mark Lyall Grant, had expressed concerns about the completeness of Syria's disclosures, and said the OPCW mission should remain in place following removal of chemical weapons until verification tasks can be completed.^[20] A late disclosure in 2014 regarding Syria's ricin program raised doubts about completeness of the government's declaration of its chemical weapons stockpile,^[21][22] and in early May 2015, OPCW announced that inspectors had found traces of sarin and VX nerve agent at a military research site in Syria that had not been declared previously by the Assad regime.^[23] Syria appeared to bomb Khan Shaykhun with sarin in April 2017.^[24] A chemical attack on Douma on 7 April 2018 that killed at least 49 civilians and injured scores more has been blamed on the Assad government,^[25] though the Syrian government denies these charges. In March 2023, UN Security Council declared Syria's Chemical Weapons disarmament claims "incomplete" and UN Disarmament chief Izumi Nakamitsu stated that Syrian declarations "cannot be considered accurate", violating the Chemical Weapons Convention.^[26]