LYNESS, SCOTLAND - MAY 31:  In this handout photo provided by the German Government Press Office (BPA),  German President Joachim Gauck and Princess Anne, Princess Royal lay wreaths during the 100th anniversary commemorations for the Battle of Jutland at the Lyness cemetery on May 31, 2016 in Lyness, 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 Guido Bergmann/Bundesregierung via Getty Images)