fox, reaching the by the world service, that the russian forces, hitting a psychiatric hospital in ukraine's kharkiv region, that's according to the kharkiv regional government. looking at the tactics we have seen the russians deployed so far, we hear the downing street talking about the potential use of the chemical, biological weapons, indeed, with lamar putin talking about that. with some concerning indeed. >> it is already very concerning. remember, this is a humanitarian crisis, brought about by choice. it is brought about by choice, with against ukraine, and a country that didn't threaten russia, in any way. he talks about them being one people, and yet, he is willing to inflict an appalling level of death, and suffering, on men, women, and children. so, the fact that he escalated by using chemical weapons, actually, would not surprise me. >> absolutely appalling. when you have an individual like vladimir putin in charge