Army Lt. Gen. H.R. McMaster listens as President Donald Trump makes the announcement at Trump's Mar-a-Lago estate in Palm Beach, Fla., Monday, Feb. 20, 2017, that McMaster will be the new national security adviser. (AP/Susan Walsh)

Amid Renewed Arms Shipments To Rebels, McMaster ‘Doubts” US Will Send More Troops To Syria

The U.S. will provide additional arms to the U.S.-backed Syrian rebel force, but it hasn’t been clear about troops.