UNITED STATES

1. Lloyd Austin

US secretary of defence

Instrumental in overseeing the Afghanistan withdrawal and Aukus submarine deal

2. Jake Sullivan

US national security adviser

Has called to rebuild alliances with China

3. Melanie Nakagawa

Special assistant to the President and senior director for climate

A veteran of energy transformation policy who will help shape US proposals at Cop26

4. Dr Amanda Sloat

Special assistant to the President and senior director for Europe at NSC

The White House’s resident Brexit expert

5. Daleep Singh

Deputy national security adviser and deputy NEC director

Ex-new York Federal Reserve markets chief

6. Philip Reeker

Charge d’affaires, US Embassy in London

A veteran US diplomat. He is expected to be replaced soon by Jane Hartley, a former ambassador to France