Tensions between Britain and Russia escalated after the British government announced it would expel the Russian defense attaché, remove diplomatic premises status from several Russian properties in the UK, and impose new restrictions on Russian diplomatic visas.

On Tuesday, the Russian Foreign Ministry summoned the British Ambassador in Moscow to respond to Ukraine's using weapons supplied by Britain to strike Russian territory.

Foreign Secretary David Cameron said recently that Britain has allowed Ukraine to use long-range cruise missiles supplied by the UK to attack Russian territory.

According to the Russian Foreign Ministry, over the past two years the West has, on one hand, claimed no involvement in the conflict between Russia and Ukraine, but on the other, has provided strong support to Ukraine. The Foreign Secretary's statement clearly demonstrated Britain's stance and made it a party to the conflict, said the Russian Foreign Ministry.