North Korean dictator Kim Jong-un has sent a letter of congratulations to the Queen to mark her 70 years on the throne.
Buckingham Palace confirmed that the leader had sent a private letter to the monarch in honour of her Platinum Jubilee, but officials were tight-lipped on the contents.
"The private message from Kim Jong Un to Her Majesty The Queen to mark her Platinum Jubilee is in line with standard practice of receiving messages from countries with whom we have diplomatic relations," a spokesperson for the Palace said.
This isn't the first time the two have made contact. In September 2021, the Queen sent the North Korean leader well wishes in a message to mark the country's National Day.
It read: "As the people of the Democratic People’s Republic of Korea celebrate their National Day, I send my good wishes for the future."
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The Queen has received messages from various heads of state and foreign dignitaries as four days of celebrations get underway across the UK.
US President Joe Biden and First Lady Jill Biden sent a video message in which they wished Her Majesty a "joyful Platinum Jubilee celebration".
The US President added: "On behalf of the United States, congratulations to Queen Elizabeth II on an unprecedented 70 years of service to the UK and Commonwealth and thank you for your friendship to the American people."
Former President Barack Obama praised the Queen for her "grace and generosity", while French Emmanuel Macron hailed the Queen as the "golden thread" between the UK and France.
"Through these transformations, your devotion to our alliance and to our friendship has remained, and has helped build the trust that brought freedom and prosperity to our continent," he said.
Pope Francis sent "cordial greetings and good wishes" on the 70th anniversary of the Queen's coronation.
He said: "On the joyful occasion of Your Majesty's birthday, and as you celebrate this Platinum Jubilee year, I send cordial greetings and good wishes, together with the renewed assurance of my prayers that Almighty God will bestow on you, the members of the Royal family and all the people of the nation blessings of unity, prosperity and peace."
It is unclear whether Russian President Vladamir Putin will send his respects in light of his country's ongoing invasion of Ukraine which has been opposed by the UK and countries around the globe. Putin's spokesman said the government will announce their decision in the coming days as to whether they will send a message to the Monarch.