Invitations to join the board have prompted a wide range of responses, from eager assent to hedging, wait-and-see statements from bewildered world leaders.

Volodymyr Zelensky has revealed the first trilateral talks between the US, Russia and Ukraine will take place tomorrow amid fresh hopes of ending the four-year war.

At a signing ceremony for the new organisation, the US president said it would be “one of the most consequential bodies ever created in the history of the world”.