leader, and the pro-russian forces step up the violence in ukraine. did you take that as an insult? >> no, i didn't because we don't know exactly what that is. they are pro forces, are they uncontrollable or controlled, and we will find out. >> we don't know if they are controlled or uncontrolled. joining us from moscow cnn international correspondent, ivan watson. that's what we heard from russia, these are not our guys. >> reporter: that's right. the state department in the past published satellite imagery of what they say are heavy weapons crossing the russian border into eastern ukraine to support the separatist there, and i myself have reported on russian citizens, and russia makes no