Russia cuts gas to Poland and Bulgaria as mysterious explosions rock Moldova

The fighting continues to rage in Ukraine as Russia moves to cut off gas to Poland and Bulgaria. CBS News foreign correspondent Chris Livesay reports from Kyiv. Then, Joe Inwood from our partners at the BBC spoke with Anne-Marie Green and Vladimir Duthiers about how much of an impact the lack of gas will have and the explosions in Moldova that no one has owned up to yet.