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World leaders and their spouses attend the commemoration ceremony for Armistice Day, at the Arc de Triomphe in Paris Nov. 11. From left: Morocco's King Mohammed VI, U.S. first lady Melania Trump, U.S. President Donald Trump, German Chancellor Angela Merkel, Brigitte Macron, wife of French Emmanuel Macron, and Russian President Vladimir Putin. (CNS/Benoit Tessier, Reuters pool)