How Doctors Would Know If Syrians Were Hit With Nerve Gas
Tuesday, April 30, 2013
President Obama affirmed Tuesday that there’s evidence Syrians have been attacked with chemical weapons—in particular, nerve gas.
But that's not the same as proof positive.
“We don't know how they were used, when they were used, who used them,” Obama said. “We don't have a chain of custody that establishes what exactly happened.”