Britain's Prime Minister David Cameron lays a ceramic flower during a ceremony commemorating the 100th anniversary of World War One in Ypres, June 26, 2014. Also pictured are (back L-R) Sweden's Prime... more 
Britain's Prime Minister David Cameron lays a ceramic flower during a ceremony commemorating the 100th anniversary of World War One in Ypres, June 26, 2014. Also pictured are (back L-R) Sweden's Prime Minister Fredrik Reinfeldt, German Chancellor Angela Merkel, Cyprus' President Nicos Anastasiades, Slovenia's President Borut Pahor and France's President Francois Hollande. REUTERS/Philippe Wojazer (BELGIUM - Tags: ANNIVERSARY POLITICS CONFLICT) less 
1 / 31
Reuters | Photo By PHILIPPE WOJAZER / REUTERS
Thu, Jun 26, 2014 2:31 PM EDT