because those are the only places we have troops available in eastern europe. if we really want to put the squeeze on moscow we would go to nato and discuss putting the ukraine on an accelerated time line for enter into the treaty organization. that would really put the squeeze on moscow. reporter: and then there is diplomacy military style. the chairman of the joint chiefs of staff says he told the russians he didn t buy their explanation about no russian troops in crimea. these are soldiers who have been taken out of their traditional uniforms, repurposed for placement in the crimea as a militia force. but my judgment is they are soldiers. reporter: and the bottom line in this standoff really remains the same, wolf pap lot of concern that any miscalculation on the ground in crimea could spark conflict. are they concerned at the pentagon that these largely