European Council President Charles Michel, Poland's President Andrzej Duda, Belgium's Prime Minister Sophie Wilmes, Luxembourg's Prime Minister Xavier Bettel, Germany's President Frank-Walter Steinmeier, U.S. Defense Secretary Mark Esper, U.S. House Speaker Nancy Pelosi, Belgium's King Philippe and Queen Mathilde, Luxembourg's Grand Duke Henri attend a commemoration ceremony for the 75th anniversary of the Battle of the Bulge at the Mardasson World War II memorial monument in Bastogne, Belgium December 16, 2019. REUTERS/Francois Lenoir