determination has everything. i mean think about the numbers that the ukrainians have, even if all they have is a molotov cocktail. how many are left in kyiv? 1 million? 2 million? there's no way in my personal opinion as an expert in urban warfare that the russians can take this without paying a huge price. so the question is how much of a price is he willing to pay? >> let's talk about -- even with that, i want to talk about this convoy heading towards kyiv. senior defense officials saying that russian convoy heading there has stalled, that russian forces are facing fuel and food shortages and probably some morale issues as well because they didn't think they would be facing such challenges. you think this is giving the ukrainians a critical window to exploit. talk to me about that, colonel. >> every hour they -- so if i was a soldier, a commander in kyiv at this moment, i would be on a 24-hour cycle, barricading every street, every alley, every house, turning every inch -- and