Group claims mustard gas used in Syrian war

The Organization for the Prohibition of Chemical Weapons is claiming that it has proof that mustard gas was used in the town of Marea, Syria, approximately two months ago. The group doesn't know which side used the gas, but claims that at least two adults were exposed to the gas and one baby died. Governments around the world, including the U.S., have proclaimed that they will not abide such use, thus if one or the other side begins to use it, it could mark mean other countries could become involved in the war in a more direct way.