Hear why Russia expert has doubts about Putin's call for a temporary ceasefire
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Russian President Vladimir Putin has ordered his defense minister to implement a temporary ceasefire in Ukraine for 36 hours this week to allow Orthodox Christians to attend Christmas services. But the proposal was swiftly dismissed as "hypocrisy" by Ukrainian officials. CNN's John Vause talks to Russian expert Jill Dougherty, Adjunct Professor of Georgetown University, on the possible motives of Putin's ceasefire order.