KIRKWALL, SCOTLAND - MAY 31: German President Joachim Gauck and Princess Anne, Princess Royal attend the 100th anniversary commemorations for the Battle of Jutland at St Magnus Cathedral on May 31, 2016 in Kirkwall, Scotland. The event marks the centenary of the largest naval battle of World War One where more than 6,000 Britons and 2,500 Germans died in the Battle of Jutland fought near the coast of Denmark on 31 May and 1 June 1916. (Photo by James Glossop - WPA Pool/Getty Images)
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