President Donald Trump shakes hands with Army Lt. Gen. H.R. McMaster, his national security adviser, at Trump's Mar-a-Lago resort in Palm Beach, Florida, in February.
Nicholas Kamm/AFP/Getty Images
President Trump leaves the podium at Mar-a-Lago in Palm Beach, Fla., Thursday night after the U.S. fired a barrage of cruise missiles into Syria in retaliation for this week's chemical attack against civilians.
U.S.-backed Syrian Democratic Forces, made up of an alliance of Arab and Kurdish fighters, regroup on the northern outskirts of Deir Ezzor as they advance to encircle the ISIS bastion of Raqqa on Feb. 21.
Delil Souleiman/AFP/Getty Images