French President Francois Hollande (Foreground) re-kindles the eternal flame at the Tomb of the Unknown Soldier a ceremony at the Arc de Triomphe in Paris on May 8, 2015, during a ceremony to mark 70 years since victory over Nazi Germany during 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 / POOL / REMY DE LA MAUVINIERE (Photo credit should read REMY DE LA MAUVINIERE/AFP/Getty Images)
