By Ajay Nair, News Reporter
After a suspected chemical attack in which at least 70 Syrians were killed, we take a look back at allegations of previous chemical attacks made against the Assad regime.
23 December 2012
First allegation of using chemical weapons
Seven people are killed in Homs, allegedly by a poisonous gas used by Syrian forces. Symptoms reportedly include blurred vision, nausea, relaxed muscles and breathing difficulties.
19 March 2013
Dozens killed in alleged attack
A reported 25 people are killed and dozens injured after an alleged chemical weapons attacks in Khan al Assel in Aleppo and al Atebeh in Damascus. The Assad regime claimed opposition forces used chemical weapons in the fighting in those areas.
24 March 2013
‘Rocket launcher attack kills two’
Opposition activists claim Assad’s troops used chemical weapons from several rocket launchers in Adra which killed two people and injured more than 20. According to the Arms Control Association, doctors said the weapons used were phosphorus bombs, which affect the nervous system.
21 August 2013
Hundreds killed in ‘gas attacks’
More than 1,400 people are allegedly killed in sarin gas attacks in eastern and western Ghouta following a Syrian offensive – 426 children are among the dead.
21 April 2014
Three people are reported to have been killed and 133 injured in a suspected chlorine attack in the village of Talmenes, Idlib.
16 March 2015
Further deaths despite UN condemnation
Six people are killed in a suspected chlorine attack in Sarmin, Idlib, days after the UN Security Council condemns any use of the chemical as a weapon. Activists claimed three children were among those killed when an aircraft dropped barrel bombs filled with the chemical. The Syrian military denied the claims.
2 August 2016
Two dozen cases of suffocation are reported by the Syrian Observatory for Human Rights in rebel-held Saraqeb, near Aleppo.
10 August 2016
Claims of further chlorine gas use
Hospital officials in Syria report the use of chlorine gas in another chemical weapons attack in Aleppo.
3 March 2017
Probe launched into toxic gas attacks
The Organisation for the Prohibition of Chemical Weapons (OPCW) says it is looking into allegations of eight toxic gas attacks in Syria since the start of the year. Syria continues to deny any responsibility.
30 March 2017
‘Sarin gas’ attack
Fifty people are injured in an attack in the south of Ltamenah. The OPCW suspects sarin gas was used in the attack.
4 April 2017
Rebel-held town targeted
At least 74 people are killed and 300 injured in a suspected sarin gas attack in the rebel-held town of Khan Sheikhoun, Idlib. The OPCW later confirms the use of sarin gas.
13 January 2018
Attack on Douma
Six people, including women and children, are injured following an alleged chlorine gas attack in Douma, eastern Ghouta.
22 January 2018
Douma targeted again
Another alleged chlorine gas attack in Douma, which injures another 21 people, including women and children.
1 February 2018
Fatalities in further attack
A third alleged chlorine gas attack in Douma claims the lives of three people.
26 February 2018
Child dies in Douma
A child dies and a further 13 people suffer breathing difficulties after another suspected chemical attack in Douma.
7 March 2018
29 injured in eastern Ghouta
Saqba, in eastern Ghouta, sees a suspected chlorine attack, which injures 29 people, mostly children, according to reports.
7 April 2018
Dozens killed and hundreds injured
At least 70 people are killed and at least 500 injured in a suspected chemical attack in Douma.