U.K. ramps up Russian feud over poisoning of former spy

— Relations between Britain and Russia plunged Wednesday to a chill not seen since the Cold War as Prime Minister Theresa May expelled 23 diplomats, severed high-level contacts and vowed both open and covert action against Kremlin meddling after the poisoning of a former spy.

Russia said it would respond soon to what it called Britain’s “crude” and “hostile” actions.

While May pledged to disrupt Russian espionage and “hostile state activity,” she gave few details about how hard Britain would hit Russian politicians and oligarchs where it really hurts — in their wallets.

“Expelling diplomats is a kind of a standard response,” said Natasha Kuhrt, a Russia expert at King’s College London. “I’m not sure it’s going to make Moscow stand up and think.”

May told the House of Commons that 23 Russians diplomats who have been identified as undeclared intelligence officers have a week to leave Britain.

“This will be the single biggest expulsion for over 30 years,” May said, adding it would “fundamentally degrade Russian intelligence capability in the U.K. for years to come.”

May spoke after Moscow ignored a midnight deadline to explain how the nerve agent Novichok, developed by the Soviet Union, was used against Sergei Skripal, an ex-Russian agent convicted of spying for Britain, and his daughter Yulia. They remain in critical condition after being found unconscious March 4.

May said “there is no alternative conclusion other than that the Russian state was culpable for the attempted murder of Mr. Skripal and his daughter.”

Russia did not immediately announce retaliatory measures, but its foreign ministry said “our response will not be long in coming.”