After Johnson chaired an emergency response meeting on the situation in Afghanistan, he said Britain's airlift would continue "going up until the last moment".
Downing Street said Johnson "outlined his intention to host a virtual meeting... in the coming days", during a call to French President Emmanuel Macron when he stressed the need for a "unified approach" to the situation.
"What we must do now is not turn our backs on Afghanistan but continue, as a member of the (UN) Security Council, a country deeply involved in the strategic future of the area, to work with our partners, and make sure the government of Kabul does not allow that country, again, to be a breeding ground for terror," he said.
Johnson said London police chief Cressida Dick was a formidable officer but that a decision on renewing her contract was for the London mayor and Home Secretary Priti Patel