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LONDON - JUNE 14: Queen Elizabeth II presents US President Ronald Reagan with an honoury Knighthood on June 14, 1989 at Buckingham Palace in London. (L - R) Ronald Reagan, Queen Elizabeth II, and Reagan's wife Nancy Reagan . (Photo by David Levenson/Getty Images)

LONDON - JUNE 14:  Queen Elizabeth II presents US President Ronald Reagan with an honoury Knighthood on June 14, 1989 at Buckingham Palace in London. (L - R) Ronald Reagan, Queen Elizabeth II, and Reagan's wife Nancy Reagan .  (Photo by David Levenson/Getty Images)