Britain shared “unprecedented levels” of intelligence about a spy poisoning it blamed on Moscow, which has led at least 25 countries to expel Russian diplomats, a senior UK government official said Tuesday. This week’s coordinated expulsions have echoed Britain’s action in response to the March 4 attack on former Russian double agent Sergei Skripal and his daughter in the English city of Salisbury. London has shared “unprecedented levels of intelligence with partners” since the attack, a senior government official said, culminating in the response from capitals around the world.
