Russian President Vladimir Putin had a tense exchange with his spy chief Sergei Naryshkin during a crucial meeting of the Russian Security Council on Monday (February 21).

Watch: Russian President Vladimir Putin's tense exchange with his spy chief over eastern Ukraine

Moscow will respond in kind after Lithuania pardoned two Russians jailed for espionage, the head of Russia's foreign intelligence agency said Friday. "According to my information, it is reciprocal measures," Sergei Naryshkin, director of the Foreign Intelligence Service (SVR) told Russian news agencies in response to a question about Moscow's reaction.

Moscow will respond in kind to Lithuania's pardon of Russian spies: Spy chief

In an attempt to cool nerves over the spy row which has led to tit-for-tat expulsion of diplomats in the West and in Russia

Spy row: 'Should not bring matters to level of Cuban missile crisis,' says Russian intelligence chief