Syria's Government Controls The Chemical Weapons.
Kerry said: "Moreover, we know that the Syrian regime maintains custody of these chemical weapons." This is an important point. In civil war, military equipment is often lost, and there's a chance that anti-Assad rebels could have acquired the weapons at some point. Here Kerry clearly identifies the government as responsible for the attack. Furthermore, he notes that Assad's government shelled the site of the attack with artillery, obliterating evidence that the U.N. weapons inspectors could otherwise find.