"Any battleground is an extremely toxic environment, " said JeanPascalZanders, a senior research fellow at the European Union Institute for Security Studies, who specializes in chemical and biological armament.
JeanPascalZanders, a chemical weapons expert and a senior research fellow for the European Union Institute for Security Studies, cast doubt on the use of chlorine, saying in an e-mail that one small rocket couldn't deliver the quantity needed to kill 25 people.