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AMMAN, JORDAN - NOVEMBER 16: Jordanian Princess Sumaya bint Hassan speaks during the 10th Amman Security Forum in Amman, Jordan on November 16, 2016. (Photo by Salah Malkawi/Anadolu Agency/Getty Images)

AMMAN, JORDAN - NOVEMBER 16:  Jordanian Princess Sumaya bint Hassan speaks during the 10th Amman Security Forum in Amman, Jordan on November 16, 2016. (Photo by Salah Malkawi/Anadolu Agency/Getty Images)

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LONDON, ENGLAND - NOVEMBER 16: Queen Elizabeth II holds an Audience with Keith Mitchell, the Prime Minister of Grenada at Buckingham Palace on November 16, 2016 in London, United Kingdom. (Photo by Yui Mok - WPA Pool/Getty Images)

LONDON, ENGLAND - NOVEMBER 16: Queen Elizabeth II holds an Audience with Keith Mitchell, the Prime Minister of Grenada at Buckingham Palace on November 16, 2016 in London, United Kingdom. (Photo by Yui Mok - WPA Pool/Getty Images)

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Britain's Queen Elizabeth II (C) hosts an event at Buckingham Palace in central London on November 15, 2016, to showcase forestry projects that have been dedicated to the new conservation initiative - The Queen's Commonwealth Canopy (QCC). / AFP / POOL / Yui Mok (Photo credit should read YUI MOK/AFP/Getty Images)

Britain's Queen Elizabeth II (C) hosts an event at Buckingham Palace in central London on November 15, 2016, to showcase forestry projects that have been dedicated to the new conservation initiative - The Queen's Commonwealth Canopy (QCC). / AFP / POOL / Yui Mok        (Photo credit should read YUI MOK/AFP/Getty Images)

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LONDON, ENGLAND - NOVEMBER 15: Queen Elizabeth II and Sir David Attenborough attend a reception to showcase forestry projects that have been dedicated to the new conservation initiative The Queen's Commonwealth Canopy (QCC) at Buckingham Palace on November 15, 2016 in London, England. (Photo by Yui Mok - WPA Pool/Getty Images)

LONDON, ENGLAND - NOVEMBER 15:  Queen Elizabeth II and Sir David  Attenborough attend a reception to showcase forestry projects that have been dedicated to the new conservation initiative The Queen's Commonwealth Canopy (QCC) at Buckingham Palace on November 15, 2016 in London, England.  (Photo by Yui Mok - WPA Pool/Getty Images)