particularly with the concentration of russian fire power on the capitol kyiv. here there's deep concern that a signature number of tanks amassing just inside the border. 20 miles away about 25 minutes drive. a bit longer for a tank. very large numbers of tank seen crossing from russia into ukraine. just north of where i'm standing. reports the town of sumy of heavy fighting. they have fallen to the russians. that's a border town about 100 kilometers from here. 60 miles. at the same time the authorities here are blown to brindges to slow down a movement of tanks against this city. that has the advantage perhaps of being in circle by a road. that maybe used to lay siege to it. it's a million and a half