According to international terrorism expert Max Abrahms, the military intervention “will be a restrained response by the West.”

“It’s in order to preserve the international taboo over using WMDs.”

The United Nations envoy to Syria, Lakhdar Brahimi, said Wednesday that evidence of a “substance” that may have killed more than 1,000 people was found. The announcement comes as the United States prepares a classified intelligence report for certain members on Congress, laying out the case against Assad. An unclassified version is to be made public.

“It is a very strong normative case for intervention that is hard to overlook,” said Abrahms, assistant professor of public policy at Northeastern University.