as mentioned there, we have seen this before in places like syria, in chechnia. is this different and can vladimir putin be held accountable for what he is doing? >> thank you for having me here. it is good to be with you. i think it is different in what my ukrainian colleague was saying differently, we haven't seen the same scale as we do now. we haven't seen that in europe. we haven't seen these atrocities. and what seems to me pretty evident from the videos and the pictures that we're seeing is that this was purposeful. this was an order for the russian troops to kill people in front of their houses so that we see that. and in the russian minds, that is intended to humiliate the west, to show us what they're capable of and to make us fear. and, so, this goes back to the request of ukrainians and international experts to have vladimir putin and his aids put on trial for war crimes. i hope this will be quickened as a process. but the consequences will be minimal because as we know, there is very little chance that the russians will give up all these people guilt