so russia, ukraine, france and germany coming together. it was that format that allowed the current cease-fire to be found in 2015. the russian president expressing his hope those talks could be revived and some kind of deescalation could be found. it could be by looking down that path he's able to play a longer game still. >> really appreciate you having both on this developing story. melissa bell in kyiv and nathan hodge in moskow. thank you so much. britain is urging its businesses and other organizations to prop up their defenses against possible cyber attacks from russia. a government watchdog says it doesn't see any specific threats related to the crisis in ukraine, but says groups in russia have tracked records of weaponizing cyberspace in similar situations. earlier this month a number of ukrainian government websites were hit, a move kyiv blamed on moskow. in the u.s. the department of homeland security says a russian cyber attack against the u.s. isn't out of the question depending on the u.s. and nato response to a possible ukraine