What could justify the invasion of Crimea? NYU professor of Russian studies Stephen Cohen points to NATO's expansion and tells Anderson that "Putin had little choice" but to invade. The Brookings Institute's Fiona Hill suggests the possibility of Ukraine signing a major trade agreement with the European Union actually played a larger role.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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