(From L) French President Francois Hollande, Queen Mathilde of Belgium, her husband King Philippe welcomes German President Joachim Gauck and Spain's King Felipe VI as they attend on August 4, 2014 in Liege, Belgium, commemorations marking 100 years since the invasion of Belgium by Germany at the start of World War I. World leaders leaders on Monday 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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