epa05989722 (front L-R) US President Donald J. Trump, NATO Secretary General Jens Stoltenberg, and German Chancellor Angela Merkel, and Spanish Prime Minister Mariano Rajoy walk with fellow dignitaries during the unveiling of a monument at the new NATO Headquarters during the NATO summit in Brussels, Belgium, 25 May 2017. NATO countries' heads of states and governments gather in Brussels for a one-day meeting.  EPA/STEPHANIE LECOCQ
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