chlorine
Russia talking with U.S. on assigning blame for Syria gas attacks
Jun 18, 2015 06:39 PM EDT
Weapons inspectors find undeclared sarin and VX traces in Syria - diplomats
May 08, 2015 07:47 PM EDT
U.N. Security Council to vote on chlorine arms use in Syria
Mar 06, 2015 07:36 AM EST