U.S. Secretary of Defense Jim Mattis waits for the start of the North Atlantic Council at NATO headquarters in Brussels on Wednesday, Feb. 15, 2017. For U.S. Defense Secretary Jim Mattis, the next few days will be a reassurance tour with a twist. He is expected to tell allies the U.S. is committed to NATO and is also hoping to secure bigger defense spending commitments. (AP Photo/Virginia Mayo)
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