Keir Starmer is heading to Brussels, becoming the first British prime minster to attend a European Union leaders’ meeting since the U.K. left the bloc five years ago.

Relations between presidents and prime ministers aren’t always easy, even without Elon Musk weighing in with his views.

Sir Keir Starmer is heading to Brussels to join a gathering of European Union leaders – the first time a British prime minister has done so since Brexit. Starmer is heading over the English Channel for talks focused on defence and security co-operation and will also meet Nato secretary general Mark Rutte.