While testifying before Congress on Thursday, Secretary of State John Kerry declared that Syria has violated the Chemical Weapons Convention it signed on to last year by using chlorine gas. That assessment by Kerry comes after the Organization for the Prohibition of Chemical Weapons claimed that Bashar al-Assad’s regime has “systematically and repeatedly” used chlorine gas in attacks in northern Syria. Assad signed the pact under the threat of U.S. military action last year when he used nerve gas against civilians. Kerry also said on Capitol Hill that Assad has been playing “footsie” with ISIS and is far from their enemy. For a while now, there have been concerns that little has been done in regard to biological weapons Assad may have as well as undeclared chemical weapons such as chlorine bombs and nerve gasses.