The United States, under the leadership of President Joe Biden, is officially requesting to rejoin Unesco, which it left under Donald Trump, the UN agency's director general, Audrey Azoulay, has announced. The Director general read out a letter written by Richard Verma, an assistant to the Secretary of State, saying "I wish to inform you, on behalf of the Department of State, that the United States is honoured to propose a plan for its return to UNESCO". IMAGES