It is a man-made toxin. Sarin was used in two terrorist attacks in Japan in 1994 and 1995.

When was sarin gas last used?

The Organisation for the Prohibition of Chemical Weapons concluded Sarin was used as a weapon in the south of rebel-held Latamina on 24 March 2017, and chlorine at its hospital the next day.

Which countries used sarin gas?

Nerve agents, such as sarin, choking agents, such as weaponized chlorine, and blister agents, such as sulphur mustard, have been used in Syria over the course of the civil war.