On Saturday, US President Biden congratulated King Charles and Queen Camilla on their coronation, praising the friendship and cooperation between the two nations.
President Biden tweeted: "Congratulations to King Charles III and Queen Camilla on their Coronation."
He added: "The enduring friendship between the U.S. and the U.K. is a source of strength for both our peoples."
President Biden didn't attend the Coronation of King Charles III, but the US was represented by First Lady Jill Biden.
He expressed: "I am proud the First Lady is representing the United States for this historic occasion."
The Coronation of King Charles III took place at Westminister Abbey.