Britain's Queen Elizabeth II (L) is presented with Letters of Credence by His Excellency Mr Choe Il, the Ambassador of the Democratic People's Republic of Korea, accompanied by Mrs Kim Yong (R), during a private audience at Buckingham Palace in London on February 9, 2017. / AFP / POOL / John Stillwell (Photo credit should read JOHN STILLWELL/AFP/Getty Images)

Britain's Queen Elizabeth II (L) is presented with Letters of Credence by His Excellency Mr Choe Il, the Ambassador of the Democratic People's Republic of Korea, accompanied by Mrs Kim Yong (R), during a private audience at Buckingham Palace in London on February 9, 2017. / AFP / POOL / John Stillwell        (Photo credit should read JOHN STILLWELL/AFP/Getty Images)