chemical weapons

The finding is consistent with experts' suspicions. The Organisation for the Prohibition of Chemical Weapons stopped short of saying who was responsible. The U.S. blames the Syrian regime.

A statement says the observed "activities" recall those before an April 4 strike that killed civilians, including children. It warns the Assad government that it would "pay a heavy price."

The blacklisted people work on weapons development for Syria, the administration says. Treasury Secretary Steven Mnuchin says the sanctions "target the scientific support center" for the attack.

The U.S. intelligence community is confident the Syrian president used the nerve agent sarin against civilians. Assad, in an interview with the wire service, claimed the evidence is all fake.

Before and after last week's chemical weapons attack, the Trump administration sent conflicting signals about foreign intervention, Russian cooperation and the fate of Syrian President Bashar Assad.

The White House released a declassified report on the attack in Khan Shaykhun. It says the U.S. is "confident" Syria's Bashar Assad was responsible and that Russia is attempting to deflect blame.

The U.S. has now bombed both main players in the Syrian war: President Bashar Assad's military and the Islamic State. But the Trump administration hasn't spelled out what sort of outcome it's seeking.

From Iran to China, from France to Bolivia, see where the world is coming down on the U.S. missile strike on a Syrian air base.