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Putin said that Russian troops would be moved from the Ukraine border, but NATO says they have not seen any withdrawal.
Ukrainian pop star Ruslana speaks out in support of Ukraine and against Russian President Vladimir Putin.
Brian Todd examines a photo that White House photographer Pete Souza says is Putin meeting former President Reagan.
Pres. Obama's former national security adviser Tom Donilon tells Wolf Blitzer that Putin isn't crazy, but as an autocrat at the center of a regime, he may be getting bad intelligence from his supporters.
Less than a year after Putin's New York Times op-ed condemning the use of force in Syria without UN consent, Russia has troops on the ground in Ukraine. CNN's Brian Todd reports many are now calling the Russian leader a hypocrite.
CNN's Brian Todd examines Russian President Vladimir Putin and what is behind his aggression in Ukraine - from restoring the Russian empire to extreme paranoia.
CNN's Jim Sciutto explains the strong ties Russian President Vladimir Putin has with conflict-torn Ukraine.
CNN's Fareed Zakaria takes a look at the chances Russian President Vladimir Putin would send troops into Ukraine.
With new terror threats to the Winter Olympic Games and its athletes, Russian President Vladimir Putin arrives in Sochi to inspect the grounds - and pet some snow leopards. CNN's Nick Paton Walsh reports.