President Donald Trump, his wife Melania Trump, left, German Chancellor Angela Merkel, center, French President's Emmanuel Macron's wife Brigitte and Russian President Vladimir Putin, right, attend ceremonies at the Arc de Triomphe Sunday, Nov. 11, 2018 in Paris. Over 60 heads of state and government were taking part in a solemn ceremony at the Tomb of the Unknown Soldier, the mute and powerful symbol of sacrifice to the millions who died from 1914-18. (AP Photo/Francois Mori, Pool)