The mounting tensions between Russia and the United Kingdom took a new turn Saturday.

Russia retaliated against the United Kingdom Saturday morning, announcing it would also be expelling 23 British diplomats amid the growing tensions between the two nations over the nerve agent attack on a former Kremlin spy.

The Russian Foreign Ministry said it was ordering the closure of the British Council – a government organization for cultural and scientific cooperation – as well as ending an agreement to reopen the British consulate in St. Petersburg.

British diplomats have to leave within a week.

The statement said the government could take further measures if Britain takes any more “unfriendly” moves toward Russia.

A spokesman for the British foreign ministry said in a statement Saturday they expected a reaction from the Kremlin and are assisting their staff members who have been expelled.

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