Diplomacy and the information wars

US Pentagon spokesperson John Kirby addresses the intel onslaught about Russia's moves over Ukraine ... Christiane asks Ukraine's ambassador to Germany if western countries are doing enough ... With the highest court in sports clearing Russian skater Kamila Valieva to participate at the Beijing Olympic games, we talk to expert and Oscar-winning filmmaker Brian Fogle about Russia's perennial doping problem ... Dallas Mayor Eric Johnson explains how his city is bucking the trend on violent crime.

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