When Keir Starmer meets Joe Biden at the White House on Friday, the war in Ukraine – and an expected move to lift restrictions on Ukraine’s use of long-range Storm Shadow missiles – will be at the top of the agenda.
The meeting follows a week of diplomatic choreography between the British and Americans, culminating in the US secretary of state, Antony Blinken, and UK foreign secretary, David Lammy, travelling to Kyiv on Wednesday.