Polish prime minister Donald Tusk and UK PM Keir Starmer among US allies to pay tribute to US president’s decades of public service

• Biden drops out of presidential race – live updates
• Biden drops out: what to know about his decision, Kamala Harris and the Republican response

Leaders from around the world have begun to react to Joe Biden’s announcement that he would not seek re-election this year, endorsing vice-president Kamala Harris in the most unorthodox US presidential campaign in generations.

US allies largely offered tributes to Biden’s work over decades of government service, discussing his work as a partner in international security, without addressing the tense political debate still unfolding in the US.