AMSTERDAM, NETHERLANDS - NOVEMBER 28:  Dutch King Willem-Alexander (right 2) and Queen Maxima of the Netherlands (R) welcome King Philippe (left 2) and Queen Mathilde (L) of Belgium with an official welcome ceremony at the Dam Square in the front of the Royal Palace at the start of the three-day state visit on 28 November 2016 in Amsterdam, Netherlands. (Photo by Stringer/Anadolu Agency/Getty Images)