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The Queen will meet US president Joe Biden when he is in the UK later this month, Buckingham Palace has confirmed.
Biden and his wife Dr Jill Biden will meet the Queen at Windsor Castle, where she has been living through most of the pandemic.
The meeting will take place on 13 June, the day after her Trooping the Colour celebrations, which will also take place in Windsor.
It's not thought the two have met before. However, the Bidens are friends with Prince Harry, the Queen's grandson.
Biden will be in Cornwall for the G7 gathering, and CNN first reported last week that a sit down with the British monarch was on the cards while he was in the same country.
Although Biden was vice president in Barack Obama's administration, it's not thought he has met the Queen.
He has met Prince Charles and Camilla, when they toured the US in 2015, and he has been to several of the Invictus Games events, which are run by Prince Harry.
Biden is the 14th president of the US during the Queen's 69-year reign.
She first knew Harry S Truman and she hosted Biden's predecessor Donald Trump when he attended on a state visit in June 2019.
As is tradition, the Queen sent a private message of congratulations to Biden when he won the presidential election in 2020.
He sent a message of condolence when her husband Prince Philip died in April.
The Bidens said they were keeping the Royal Family "in our hearts during this time".
In March, Biden offered his support to Harry and his wife Meghan after they recounted their experience of life inside the palace while they were senior working royals, particularly as Meghan said she had suffered suicidal thoughts while pregnant with their son Archie.
Biden's press spokesman Jen Psaki said at the time: "For anyone to come forward and speak about their own struggles with mental health, and tell their own personal story, that takes courage.
"And that's certainly something the president believes. And he's talked about the importance of investing in these areas.”
She added: "We have a strong and abiding relationship with the British people and a special partnership with the government of the United Kingdom on a range of issues, and that will continue."
The Queen's meeting with Biden will be seen as a sign she is keen to keep going with engagements and duties of the office of head of state despite recently turning 95.
The event is not a state visit and there will not be a state dinner, but the Queen might host a private lunch for the Bidens, as she did for the Obamas in 2016 when they visited Windsor.
G7 is taking place between 11 and 13 June in Carbis Bay, Cornwall, and will be attended by Biden, German chancellor Angela Merkel, Japanese prime minister Yoshihide Suga, Italian prime minister Mario Draghi, Canadian prime minister Justin Trudeau, French president Emmanuel Macron and UK prime minister Boris Johnson.
President of the European Council Charles Michel and president of the European Commission Ursula von der Leyen will also be there, as will Australian prime minister Scott Morrison, South Korean president Moon Jae-in, and South African president Cyril Ramaphosa. Indian prime minister Narendra Modi was invited but has decided not to attend because of the COVID-19 situation in his country.
Climate change, the vaccine rollout and the recovery from the coronavirus pandemic are likely to be the biggest topics on the agenda for the world leaders.
More details about the Queen's meeting with Biden will be released "in due course", Buckingham Palace said.
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