LONDON, ENGLAND - APRIL 04:  Prince Harry delivers a keynote speech at an International Mine Awareness Day reception at Kensington Palace on April 4, 2017 in London, England.  2017 is the 20th anniversary of the Anti-Personnel Mine Ban Treaty in Ottawa signing, which Prince Harry's Mother, Princess Diana, was closely involved in.  The world's two leading landmine charities, Mines Advisory Group (MAG) and The HALO Trust, held a reception on International Mine Awareness Day in order to galvanise support for their goal of a world free of landmines by 2025. (Photo by Kirsty Wigglesworth-WPA Pool/Getty Images)