President Donald Trump's national security adviser is expressing doubt the U.S. will send more ground troops to Syria. He says it "remains to be seen" whether additional troops are needed, but he doesn't "think so." McMaster says the U.S. will support its "partner forces" in Syria. The U.S. has been expected to provide additional arms to the U.S.-backed Syrian Democratic Forces for the Raqqa offensive. Last week, Trump appeared to rule out deeper American military intervention in Syria beyond retaliatory strikes if Syria's president continued to attack civilians with chemical weapons.

Source: ABC News April 16, 2017 16:18 UTC