March 1988: Over two days in March, the ethnic Kurd city of Halabja in northern Iraq (population 70,000) was bombarded with chemical bombs, which included sarin, in the Halabja poison gas attack. An estimated 5,000 people died.
April 1988: Sarin was used four times against Iranian soldiers at the end of the Iran–Iraq War, helping Iraqi forces to retake control of the al-Faw Peninsula during the Second Battle of al-Faw.
1993: The United Nations Chemical Weapons Convention was signed by 162 member countries, banning the production and stockpiling of many chemical weapons, including sarin. It went into effect on April 29, 1997, and called for the complete destruction of all specified stockpiles of chemical weapons by April 2007.
When the convention entered force, the parties declared worldwide stockpiles of 15,047 tonnes of sarin. As of December 2015, 89% of the stockpiles had been destroyed
1994: Matsumoto incident; the Japanese religious sect Aum Shinrikyo released an impure form of sarin in Matsumoto, Nagano, killing eight people and harming over 200. The Australian sheep station Banjawarn was a testing ground. 1995: Tokyo subway sarin attack; the Aum Shinrikyo sect released an impure form of sarin in the Tokyo Metro. Twelve people died.
2004: Iraqi insurgents detonated a 155 mm shell containing binary precursors for sarin near a U.S. convoy in Iraq. The shell was designed to mix the chemicals as it spun during flight. The detonated shell released only a small amount of sarin gas, either because the explosion failed to mix the binary agents properly or because the chemicals inside the shell had degraded with age. Two United States soldiers were treated after displaying the early symptoms of exposure to sarin.
2013: Ghouta chemical attack; sarin was used in an attack in the Ghouta region of the Rif Dimashq Governorate of Syria during the Syrian civil war.
Varying sources gave a death toll of 322.
2017: Khan Shaykhun chemical attack; sarin gas was allegedly released in rebel-held Idlib Province in Syria during a Syrian army airstrike. Civilian death toll of ~57 reported, over 200 more injured.
Source: Wikipedia
Do you have a clue of when Assad took power? he took power in 2001- BY DEMOCRATIC ELECTION!! In 1988 he was 16!!!Give us all a break. IT WAS NOT SARIN!!Are you following along? That 2013 attack has been completely debunked!! They found the Isis Chemical factories in 2014 near Palmyra— LOOK IT UP. IT WAS ISIS IN 2013, Everyone knows that! My God !! Are you CIA?