Watch: Queen to meet President Biden at Windsor Castle
The Queen is to meet president Joe Biden when he is in the UK for the G7 meeting, Buckingham Palace confirmed on Thursday.
Biden, who has previously met her son Prince Charles and grandson Prince Harry, will be the 14th president of the US during the Queen's reign.
Once she ticks the meeting on 13 June off her to do list, she will have met all but one of them.
The Queen's first president was Harry S Truman, who she met when Princess Elizabeth in 1951, the year before she acceded. He was president until 1953, the year of her coronation.
She has met all the presidents since then except Lyndon B Johnson, though it's not clear why she did not meet him.
He never extended an invitation to Washington DC, nor did she issue one for the UK.
The Queen met Dwight D Eisenhower in 1957 during her state visit to the US.
And two years later she met him again in Canada, which is a Commonwealth Realm, meaning she is head of state and Queen there too.
She is said to have had an affectionate relationship with Eisenhower, who was invited to stay at her Scottish home of Balmoral Castle.
The Queen next met John F Kennedy and his wife Jackie Onassis in London in June 1961.
The couple were welcomed for a dinner with the Queen and her husband at Buckingham Palace.
Kennedy was assassinated two years later, but the Queen did not attend his funeral, which is one of the opportunities she would have had to meet his successor, Johnson.
Although she missed meeting Johnson, she met Richard Nixon twice during his time as US president.
He was in London in 1969, for dinner with the Queen at Buckingham Palace.
And the following year she met him at Chequers, the prime minister's country residence, along with his wife, Pat.
The next two presidents were Gerald Ford and Jimmy Carter.
She met Ford in the US in 1976, as the nation celebrated its bicentennial. She carried out a state visit that year.
And in 1977 she welcomed Carter to London, in her silver jubilee year.
The Queen Mother and Prince Philip were also present at the dinner for the president.
The Queen invited Ronald Reagan and his wife Nancy to stay at Windsor Castle in 1982 and the two were pictured riding alongside each other in the grounds of Windsor Great Park.
Images from the state dinners also show they shared a few jokes over the course of their evenings together.
They met again in the US in 1983, when she toured the west coast of the country.
After Reagan came the first of the George Bush dynasty, as Bush snr came into office.
He visited her in 1989 in London, having lunch with her at Buckingham Palace.
She visited him in the US in 1991, though the meeting became known as 'podiumgate' because all that could be seen of her as she gave a speech on the White House lawn was her hat.
In between Bush Snr and George W Bush came Bill Clinton.
She met Clinton on several occasions, including in 2000 when he was accompanied by his wife Hillary and daughter Chelsea at Buckingham Palace.
Bush then became president, and was another US leader to meet the Queen several times.
He travelled to the UK in July 2001, meeting her at Buckingham Palace, and then two years later he made a state visit, the first official one by a US president.
In 2007 she went to the US and found herself the victim of one of his gaffes as he aged her by 200 years in a speech.
He followed his mistake with a wink to Her Majesty.
The Queen also met Barack Obama a few times during his eight years in office.
She forged a warm relationship with his wife Michelle Obama and they were even pictured putting their arms around each other on one occasion, despite touching the Queen usually being a breach of protocol.
They met before the G20 summit in 2009, and for a state visit to the UK in 2011.
The Obamas also got on well with the wider family, meeting the Duke and Duchess of Cambridge, and Prince Harry as well as a toddler Prince George in 2016.
Donald Trump met the Queen twice during his one term presidency, and was hosted along with his wife Melania at Windsor Castle in 2018.
He returned for a state visit in 2019, and brought along many other members of his family.
He had a great affection for the Queen who he called a "tremendous woman".
But he was caught making a mess of protocol during the viewing of a guard of honour because he stepped in front of the Queen.
The Queen's meeting with Biden will come the day after Trooping the Colour, the annual official celebrations of her birthday, and be in Windsor, where she has spent most of the pandemic.
As he will be the 14th president she has worked with and 13th she has met, it means she will have met more than a quarter of all the US presidents who have ever been in office.
Biden is the 46th president of the US.
He will be in the UK from 10 June for the G7 summit which commences on 11 June.
He will be joined by his wife Dr Jill Biden, who will return to the US after meeting the Queen on 13 June, the White House confirmed.
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