It's been a while since we've had a major White House departure. As we wrap up our live coverage, here's what's gone on today, in brief:
- John Bolton has left his role as the US National Security Adviser, the third person to take the job under Donald Trump. His number two, Charlie Kupperman, has taken over for now
- It's unclear if Mr Bolton quit, or was fired - President Trump said he "disagreed strongly" with him and asked him to leave, but Mr Bolton said he offered his resignation on Monday
- No reason has officially been given for Mr Bolton's departure, but there's speculation the pair clashed over the president's plan to invite the Taliban to his Camp David retreat
- Mr Bolton has a more aggressive, "hawkish" foreign policy approach than Mr Trump, who wants US troops out of Afghanistan quickly
- Secretary of State Mike Pompeo said the president "should have people he trusts and values" on his staff
You can follow any further developments on our main news story here. But for now, that's it from us in London.