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WATERLOO, BELGIUM - JUNE 18 : King Philippe (C) with Queen Mathilde (L) of Belgium and King Willem-Alexander (R) attend the commemorations marking the 200th anniversary of The Battle of Waterloo in Waterloo, on June 18, 2015. (Photo by Dursun Aydemir/Anadolu Agency/Getty Images)

WATERLOO, BELGIUM - JUNE 18 :   King Philippe (C) with Queen Mathilde (L) of Belgium and King Willem-Alexander (R) attend the commemorations marking the 200th anniversary of The Battle of Waterloo in Waterloo, on June 18, 2015. (Photo by Dursun Aydemir/Anadolu Agency/Getty Images)