U.S. intel claims evidence Syria used chemical weapons – how will world react? Arwa Damon on possible next steps

FROM CNN WIRES:

(CNN) - The United States has evidence that the chemical weapon sarin has been used in Syria on a small scale, Defense Secretary Chuck Hagel said Thursday.

But numerous questions remain about the origins of the chemical and what effect its apparent use could have on the ongoing Syrian civil war and international involvement in it.

This morning on "Early Start," CNN's Arwa Damon looks at possible next steps after U.S. admits it has evidence that Syria used chemical weapons on rebels.

READ MORE: U.S.: Intelligence points to small-scale use of sarin in Syria