CNN CNNI Simulcast March 18, 2015 07:28:00
Russia is celebrting the first anniversary of the annex annexation of crimea. tens of thousands are expected to gather in moscow's red square to celebrate later today. >> that has been flexing its military muscle ahead of the anniversary. pentagon correspondent barbara starr has that part of the story. >> reporter: raising tensions, vladimir putin is keeping guessing. nato's deputy military commander warning moscow to tread carefully. >> russia might believe that the large scale conventional forces could in future be used not only for intimidation and coercion but potentially to seize nato ter...