AP Sources: US Intelligence On Syria Chemical Weapons Attack No 'Slam Dunk'

A report by the Office of the Director for National Intelligence outlining that evidence against Syria is thick with caveats. It builds a case that Assad's forces are most likely responsible while outlining gaps in the U.S. intelligence picture. Relevant congressional committees were to be briefed on that evidence by teleconference call on Thursday, U.S. officials and congressional aides said.