forces. they have surrounded the ukrainian capital for about a week now. tuesday they targeted a television tower in kyiv with blasts. the babin yar holocaust memorial also getting hit in the blast. what do you make of that? do you see this as them turning to a strategy of pure destruction at this point? >> well, it's always going to be a political military strategy for mr. putin. yes, he is turning up the heat. he wants more destruction. but he'd like to destroy as little as possible in order to accomplish his objectives. so at the same time he is open for more talks. every talk will be the same. it is you need to surrender now before there is more destruction. and so it's a question of what is ukraine's tolerance for this pain. how long can they hang on? how much reinforcement can we get in there in terms of resupplies. can we do anything to give them some kind of air cover, some obsolete jets from europe i