Russia’s Federal Security Service on Friday accused six British diplomats of spying and said a decision has been made to withdraw their accreditation.

Russian state TV quoted an official from the security service known as the FSB as saying that they will be expelled. The expulsions come as Prime Minister Keir Starmer visits Washington for talks with U.S. President Joe Biden that will include Ukraine’s request to use Western-supplied weapons against targets inside Russia.

Starmer said on his way to the U.S. that Britain does not “seek any conflict with Russia.”

“Russia started this conflict. Russia illegally invaded Ukraine. Russia could end this conflict straight away,” he told reporters.