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.
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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.
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President Trump (right) shakes hands with Army Lt. Gen. H.R. McMaster at Trump's Mar-a-Lago estate in Palm Beach, Fla., on Monday. Trump called McMaster "a man of tremendous talent and tremendous experience" as he announced that he would replace Michael Flynn as national security adviser.