(LtoR) Britain's Prince Harry, Belgium's Queen Mathilde, Duchess of Cambridge Catherine, Belgium's King Philippe, Britain's Prime minister David Cameron and Britain's Prince William attend a ceremony at the Saint Symphorien Military cemetery on August 4, 2014 in Mons, Belgium, during commemorations marking 100 years since the invasion of Belgium by Germany at the start of World War I. World leaders on August 4 commemorated the 100th anniversary of the outbreak of World War I, a small Balkans conflict that went global with the German invasion of neutral Belgium in August 1914. AFP PHOTO / JOHN THYS (Photo credit should read JOHN THYS/AFP/Getty Images)
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