it seems the russians have freedom of movement within the populated areas there. the mayor has called the men of the city to the defense of it. he called them out on sunday. that was a false alarm. but they're now seeing what they say is 100-plus strong convoy on the outskirts of that town. deep concerns there as well because of the violence we saw inflicted on civilian areas there with heavy weaponry and now over here, odesa on high alert, barricades across the streets here. utter silence in this third largest city of ukraine. it's a strategic port. you can't really run the country without controlling this economic lever to it. and i think what we're seeing, the russian movement stall up north, they have moved up from crimea and appear to be having more motion. unclear if that's permanent progress. anderson? >> nick paton walsh, we'll continue to check in with you throughout the hours ahead.