Exclusive: U.S. Rushes to Stop Syria from Expanding Chemical Weapon Stockpile

The regime of embattled Syrian dictator Bashar Assad is actively working to enlarge its arsenal of chemical weapons. Assad's operatives have tried repeatedly in recent months to buy up the precursor chemicals for deadly nerve agents like sarin, even as his country plunges further and further into a civil war. The U.S. and its allies have been able to block many of these sales. But that still...