King Philippe of Belgium salutes at the tomb of the Unknown Soldier, at the Congress Column in Brussels on May 8, 2015, during a ceremony to mark 70 years since the end of World War II. Europe held sombre ceremonies to mark 70 years since victory over Nazi Germany on May 8 as leaders warned of modern day threats such as the war in Ukraine and Islamic extremism.  AFP PHOTO / BELGA / THIERRY ROGE 
--BELGIUM OUT--        (Photo credit should read THIERRY ROGE/AFP via Getty Images)