The latest, from deputy foreign minister Sergei Ryabkov, was first reported by Russian state-owned news agency RIA.He was quoted as saying Russia will take adequate countermeasures in response to the West's "growing involvement" in the war with Ukraine.Western powers have provided Ukraine with military support throughout the conflict, and have placed crippling sanctions on Russian assets.Mr Ryabkov said: "We warn and hope that they realise the danger ofuncontrolled escalation in Washington and other Westerncapitals."Yesterday, Russian President Vladimir Putin said a number of missile strikes which hit Ukrainian cities, killing at least 14, were in retaliation for attacks on Russian territory."