Use of chemical weapons in the Syrian Civil War


The use of chemical weapons in the Syrian Civil War has been confirmed by the United Nations. Deadly attacks during the war included the Ghouta attack in the suburbs of Damascus in August 2013 and the Khan al-Assal attack in the suburbs of Aleppo in March 2013. While no party took responsibility for the chemical attacks, the Syrian Ba'athist military was seen as the main suspect, due to a large arsenal of such weapons. A U.N. fact-finding mission and a UNHRC Commission of Inquiry have simultaneously investigated the attacks. The U.N. mission found the likely use of the nerve agent sarin in the case of Khan al-Assal, Saraqib, Ghouta, Jobar and Ashrafiyat Sahnaya. The UNHRC commission later confirmed the use of sarin in the Khan al-Asal, Saraqib and Ghouta attacks, but did not mention the Jobar and the Ashrafiyat Sahnaya attacks. The UNHRC commission also found that the sarin used in the Khan al-Asal attack bore "the same unique hallmarks" as the sarin used in the Ghouta attack and indicated that the perpetrators likely had access to chemicals from the Syrian Army's stockpile. Those attacks prompted the international community to pressure disarmament of the Syrian Armed Forces from chemical weapons, which was executed during 2014. Despite the disarmament process, dozens of incidents with suspected use of chemical weapons followed throughout Syria, mainly blamed on Syrian Ba'athist forces, as well as the Islamic State of Iraq and the Levant and on Syrian opposition forces and Turkish Armed Forces. There have been a number of evidence-gathering processes developed at the international level
In August 2016, reports by the United Nations and the OPCW explicitly blamed the Syrian military of Bashar al-Assad for dropping chemical weapons on the towns of Talmenes in April 2014 and Sarmin and Qmenas in March 2015 and ISIS for using sulfur mustard on the town of Marea in August 2015. Several other attacks have been alleged, reported and/or investigated.
In December 2016, at least 53 people were killed in an apparent nerve gas attack in ISIS-held villages near Uqairabat, marking the first major nerve gas attack since the 2013 accord. The Khan Shaykhun chemical attack on 4 April 2017 drew international condemnation and resulted in U.S. military action against the Syrian government-controlled airbase at Shayrat. The Douma chemical attack on 7 April 2018 also drew a military response from the United States, United Kingdom and France.
In June 2018 the OPCW FFM confirmed sarin use in Latamenah while investigating 25 March 2017 chlorine attack. Hexamine was detected with samples, along with HFP, which the OPCW-UN JIM has previously described as being one of the key indicators that the sarin used in Khan Sheikhoun came from the Syrian governments sarin process.
On 8 April 2020, the OPCW issued a report determining that the Syrian Air Force was the perpetrator of the chemical weapon attacks in Latamenah.

Background

At the outbreak of the Syrian Civil War in 2011 concerns were raised about both the security of Syria's chemical weapon sites and about the potential use of chemical weapons. In July 2012, Syrian Foreign Ministry spokesman Jihad Makdissi stated: "No chemical or biological weapons will ever be used... All of these types of weapons are in storage and under security and the direct supervision of the Syrian armed forces and will never be used unless Syria is exposed to external aggression."
A Syrian defector who worked inside the chemical weapons network alleged that in January 2012 two senior Syrian officers moved about 100 kg. of chemical weapons materials from a secret military base in Nasiriyah. The Syrian source also described construction of special trucks, which could transport and mix the weapons. These mobile mixers were constructed inside Mercedes or Volvo trucks that were similar to refrigerator trucks. Inside were storage tanks, pipes and a motor to drive the mixing machinery, the defector said. On 23 July 2012, the Syrian government confirmed for the first time that it had chemical weapons, but stated that they would only be used in instances of external aggression.
On 20 August 2012, President Barack Obama used the phrase "red line" in reference to the use of chemical weapons. Specifically, Obama said: "We have been very clear to the Assad regime, but also to other players on the ground, that a red line for us is we start seeing a whole bunch of chemical weapons moving around or being utilized. That would change my calculus. That would change my equation."
In September 2012, the Syrian military began moving chemical weapons from Damascus to the port city of Tartus. That same month, it was reported that the military had restarted testing of chemical weapons at a base on the outskirts of Aleppo. On 28 September 2012, US Defence Secretary Leon Panetta said that the Syrian government had moved its chemical weapons in order to secure them from approaching opposition forces. It emerged that the Russian government had helped set up communications between the United States and Syria regarding the status of Syria's chemical weapons. Russian Foreign Minister Sergei Lavrov stated that Syria had given the United States "explanations" and "assurances" that it was taking care of the weapons. On 8 December, it was reported that members of the jihadist Al-Nusra Front had recently captured a Saudi-owned toxic chemicals plant outside of Aleppo. On 22 December 2012, Russian Foreign Minister Sergei Lavrov stated that Syria had consolidated chemical weapons into one or two places to prevent rebels capturing them, and that recent moves that had alarmed Western governments were part of this consolidation. Brigadier General Mustafa al-Sheikh, a Syrian army defector, confirmed that most of the chemical weapons have been transported to Alawite areas in Latakia and near the coast. Some chemical munitions remain in bases around Damascus. In December 2012 McClatchy reported various chemical weapons experts' skepticism that Syria was preparing to use chemical weapons, noting their "limited utility" in a civil war situation with fluid battlelines, and Syria's comments that such use would be "suicide" in view of US threats of retaliation.
On 6 September 2013 a bill was filed in the US Congress to authorize the use of military force against the Syrian military, mainly in response to the use of sarin in the Ghouta attack on 21 August 2013. On 9 September 2013, the U.S. Secretary of State John Kerry stated that the air strikes could be averted if Syria turned over "every single bit" of its chemical weapons stockpiles. Hours after Kerry's statement, the Russian foreign minister Sergey Lavrov announced that Russia had suggested to Syria that it relinquish its chemical weapons. The Syrian foreign minister Walid al-Moallem immediately welcomed the proposal.
In September 2013 the Syrian government entered into several international agreements for the destruction of its chemical weapons that stipulated an initial destruction deadline of 30 June 2014, a deadline apparently achieved in respect of declared chemical weapons. Prior to September 2013 the Syrian government had not publicly admitted to possessing chemical weapons, although Western intelligence services believed it to hold one of the world's largest stockpiles.
On 17 August 2017, Reuters published a report detailing the extent of Syria's failure to abandon chemical weapons, citing information from investigators, inspectors and diplomatic sources. According to a source cited in the report, "There are certainly some gaps, uncertainties, discrepancies" regarding Syria's chemical weapons arsenal. For example, the Syrian government inaccurately or even falsely declared the types, purposes and quantities of chemicals in its possession, and is suspected of continuing to hold at least 2,000 chemical bomb shells that should have been converted to conventional weapons.
In June of 2019, United States Deputy Assistant Secretary of Defense Michael Mulroy stated that the United States “will respond quickly and appropriately,” if the regime uses chemical weapons again. He added that Bashar al-Assad has done more than any other to destabilize the region by "murdering his own people" and that both Russia and the Syrian regime have shown no concern for the suffering of the Syrian people creating one of the "worst humanitarian tragedies in history".

Incidents

Reported chemical weapons attacks

The table below lists the reported attacks and the main points. See the main articles for details.

Investigations

The UN mission to investigate alleged use of chemical weapons

The United Nations Mission to Investigate Allegations of the Use of Chemical Weapons in the Syrian Arab Republic was a fact-finding mission to investigate possible use of chemical weapons in Syria. On 16 September 2013 the mission published a report with focus on the Ghouta attacks. On 12 December 2013, the UN mission delivered its final report.

The UNHRC commission of inquiry

The Independent International Commission of Inquiry on the Syrian Arab Republic was set up by the United Nations Human Rights Council on 22 March 2011 to investigate human rights violations during the Syrian civil war. In its report dated 12 February 2014 they confirmed the use of sarin in the case of Khan Al-Assal, Saraqib and Al-Ghouta. The UNHRC commission also found that the sarin used in the Khan al-Asal attack bore "the same unique hallmarks" as the sarin used in the Ghouta attack and indicated that the perpetrators likely had access to chemicals from the Syrian Army's stockpile.
In none of the incidents, however, was the commission's "evidentiary threshold" met in regards to identifying the perpetrators of the chemical attacks.
In its report dated 13 August 2014 they accused Government forces of using chlorine gas in 8 incidents in Idlib and Hama governorates in April 2014. In March 2017, the Commission documented conclusive evidence that Syrian aircraft dropped “toxic industrial chemicals, including chlorine,” between 21 July and 22 December 22, during the final period of the Battle of Aleppo.

OPCW-UN Joint Mission in Syria

The OPCW-UN Joint Mission in Syria was established in October 2013. The Mission was tasked to oversee the elimination of the Syrian chemical weapons program. The first OPCW-UN team arrived in Damascus on 1 October 2013. The mission officially ended on 30 September 2014.

The Russian Khan al-Asal investigation

Vitaly Churkin, Russia's ambassador to the UN, said that its Syrian ally had asked Russian experts to look into the Khan al-Assal attack. A Russian team investigated the Khan al-Asal incident on 19 March 2013. The Russian UN ambassador Vitaly Churkin delivered a report with analysis of the samples taken at the site to the UN Secretary General Ban Ki-moon on 9 July 2013. Churkin said the chemical agent was carried by a "Bashair-3 unguided projectile", which was produced by the Basha'ir al-Nasr Brigade, a rebel group affiliated with the Free Syrian Army. However, following Churkin's announcement, Western governments said that they had yet to see any evidence that backs up the assertion that anyone besides the Assad regime had the ability to use chemical weapons. The Russian report was not released.

The OPCW Fact-Finding Mission in Syria

On 29 April 2014, the Director General Ahmet Üzümcü of the Organisation for the Prohibition of Chemical Weapons announced the creation of an OPCW mission to establish the facts surrounding allegations of the use of chlorine gas for hostile purposes in Syria. The Syrian Government has agreed to the mission.
On 27 May 2014, members of the mission were ambushed and briefly held by gunmen in rebel-held territory as it headed toward Kafr Zita to investigate the alleged chlorine gas attacks. According to the Associated Press, the OPCW said that the captive members of the mission were later "released after the intervention by Syria's main opposition group." The opposition Hama Media Centre said the attack on the convoy was carried out by President Bashar Assad's forces.
In its third report dated 18 December 2014, the mission concluded that chlorine was used in the villages of Talmenes, Al-Tamanah and Kafr Zita, but did not assign blame.
In early 2015 the mission disclosed previously undeclared traces of sarin and VX precursor compounds in a Syrian government military research site, the Scientific Studies and Research Centre, where use of those compounds had not been previously declared.

The UN-OPCW Joint Investigative Mechanism

On 7 August 2015, the United Nations Security Council adopted resolution 2235 to establish a joint investigation mechanism to identify the perpetrators responsible for the use of chemical weapons in Syria. The resolution was drafted by the United States, and adopted by all 15 members of the Security Council. The JIM issued its first report on 12 February 2016. The second was released on 10 June 2016, while the third report was issued on 30 August 2016. The third report blamed the Syrian government for two gas attacks in 2015, and accused ISIS of using mustard gas. In October 2016 the leaked fourth report of task force determined that the Syria had conducted at least three gas attacks in 2015.
On 26 October 2017, the JIM delivered the report to the UN.
In late 2017, the JIM released its report on the April Khan Shaykhun chemical attack, attributing responsibility for the incident to the Syrian government.
Reuters reported in 2018 that, according to OPCW and diplomatic sources, an OPCW chemical marker analysis linked the destroyed stockpile samples to sarin samples from 21 August 2013 Ghouta attack and also to interviewees' samples from Khan Sheikhoun and Khan Al-Assal attack sites. These findings were not released because they were outside the OPCW's mandate.
On 8 April 2020, the OPCW Investigation and Identification Team, set up in 2018, issued its first report, determining that the Syrian Air Force was the perpetrator of the chemical weapon attacks in Latamenah.

Other allegations

In February 2012 a defector from the Syrian Arab Army, a lieutenant who worked in the chemical weapons department, told Turkish newspaper Hürriyet Daily News that "BZ-CS, Chlorine Benzilate, which damages people's nerves and makes them fade away, is being used in Bab Amr." He said that some Syrian soldiers had been supplied with gas masks for protection.
In December 2012, the Syrian government claimed that chemical plant SYSACCO east of Aleppo was taken by rebel fighters from the Al-Nusra Front. The factory produces chlorine among other chemicals. On 5 November 2014, the Syrian UN-ambassador Bashar al-Jaafari, said "terrorist organizations stole about 200 tons of from" the factory.
In January 2013, US State Department cables showed a US investigation had found evidence that the Syrian military had used a chemical weapon on 23 December 2012, which was the first time an official investigation documented chemical weapon use in the conflict. On 4 June, the French foreign minister Laurent Fabius similarly declared certainty that the Syrian government had used sarin on multiple instances.
On 30 May 2013, Turkish newspapers reported that Turkish security forces had arrested Al-Nusra Front fighters in the southern provinces of Mersin and Adana near the Syrian border and confiscated 2 kg of sarin gas. The Turkish Ambassador to Moscow later said that tests showed the chemical seized was not sarin, but anti-freeze. In September six of those arrested in May were charged with attempting to acquire chemicals which could be used to produce sarin; the indictment said that it was "possible to produce sarin gas by combining the materials in proper conditions."
On 1 June 2013, the Syrian Army reported that it seized two cylinders holding the nerve agent sarin in an area it said was controlled by opposition fighters. The Syrian government declared the two cylinders "as abandoned chemical weapons" and told the OPCW that "the items did not belong to" them. On 14 June 2014, the Joint OPCW-UN Mission confirmed that the cylinders contained sarin. On 7 July 2014, the U.N. Secretary-General Ban Ki-Moon informed the U.N. Security Council about the findings.
In September 2015 a US official stated that ISIS was manufacturing and using mustard agent in Syria and Iraq, and had an active chemical weapons research team. In February 2016, the CIA Director John O. Brennan said on 60 Minutes that there were "a number of instances where ISIL has used chemical munitions on the battlefield".
On 8 April 2016, a spokesman for the Jaysh al-Islam rebel group said that “weapons not authorized for use in these types of confrontations” had been used against Kurdish militia and civilians in Aleppo. He stated that “One of our commanders has unlawfully used a type of weapon that is not included in our list”. He did not specify what substances were used but, according to Kurdish Red Crescent, the symptoms were consistent with the use of "chlorine gas or other agents". Jaysh al-Islam subsequently clarified that it was referring to “modified Grad rockets,” not chemical weapons.
On 4 May 2017, the BBC reported that, according to a Western intelligence agency, Syria was violating the 2013 disarmament deal by producing chemical and biological munitions at Masyaf, Dummar, and Barzeh.
On 27 June 2017, US officials stated that the Syrian government was preparing at a Syrian base for what seemed another chemical attack. The Trump administration warned that if another attack occurred, President Assad would pay a heavy price. This threat comes as the intelligence community states that the activity is similar to the preparations leading to the attack in Khan Sheikhoun.
Around 16 February 2018, the SOHR and the U.S.-backed Kurdish YPG stated that Turkey was suspected of conducting a chemical gas attack in Afrin. Syrian state news agency SANA, citing a doctor in a Afrin hospital, stated the shelling caused choking in six people.
In April 2018, Human Rights Watch published a report based on seven data sources, including the UN investigations, and was able to confirm 85 chemical attacks between 21 August 2013 and 25 February 2018, including 50 perpetrated by the government and three by ISIS, with the remainder not attributed.
In October 2018, BBC Panorama and BBC Arabic investigated 164 reports of chemical attacks and were able to confirm 106 of them, 51 of which were certainly launched from the air and therefore could only have been perpetrated by the government or its allies.
In February 2019, the German thinktank Global Public Policy Institute published a report that “credibly substantiated” 336 uses of chemical weapons in the Syrian war, 98% of them by the government or allied forces and the remainder by ISIL.
In May 2019, there were reports of a chemical attack on Kabana in Latakia.