inch of land in every city, in every village. here in the united states, u.s. businesses are being warned to watch fought for potential ransomware attacks in retaliation. cnn has reporters on the ground in two critical locations of this conflict. sam kiley in the donbas region of ukraine, where shelling has been reported. and frederick pleitgen in russia, where there has been a mass movement of troops and equipment toward the ukrainian border. i want to start with you, fred. you are in a trance it point. what have you been seeing where you are? >> reporter: you're right, john, we are right at the border with ukraine. within that donbas region. it is a gigantic area. you were mentioned in the intro whether or not russian forces have already crossed the border into the donbas region. now, when we were traveling here, today and yesterday, you did see a large concentration of russian forces. but some of the things that