Britain's Prince Philip, Duke of Edinburgh (L), Queen Letizia (2nd L), Spanish King Felipe VI (2nd R) and Britain's Queen Elizabeth II (R) pose for a photograph after arriving back at Buckingham Palace after a ceremonial welcome at the start of the Spanish King and Queen's three-day state visit, in central London on July 12, 2017. Spanish King Felipe VI and Queen Letizia begin a state visit to Britain on Wednesday, as the two countries attempt to strengthen ties despite tensions over Britain's plans to leave the European Union. / AFP PHOTO / POOL / Yui MOK (Photo credit should read YUI MOK/AFP/Getty Images)
