OPCW
Chemical weapons used by rebels in Syria - sources
Nov 05, 2015 08:59 PM EST
Russia delays start of U.N. probe of Syria gas attacks: envoys
Sep 02, 2015 09:31 PM EDT
Weapons inspectors find undeclared sarin and VX traces in Syria - diplomats
May 08, 2015 07:47 PM EDT
Iraqi Kurds say Islamic State used chlorine gas against them
Mar 15, 2015 09:52 AM EDT
U.N. Security Council to vote on chlorine arms use in Syria
Mar 06, 2015 07:36 AM EST