The King and President Donald Trump have held a meeting in the Oval Office as part of the state visit to the US to mark 250 years of independence.
The president and first lady Melania Trump greeted the King and Queen on the South Lawn of the White House before a welcome speech from the president to the royal couple.
Despite recent tensions between the long-time allies, the president praised the enduring relation between the nations and also mentioned the late Queen Elizabeth II, drawing attention to a tree she had planted as a sapling.
The build-up to the visit had been marred by tensions between the nations over the US military action against Iran and the subsequent blockade of the Strait of Hormuz.
In return, the president had criticised a lack of support from the UK for his actions.
While the King and president chatted in the Oval Office the Queen and first lady met students.