"i am here," he says, "and we will not lay down our arms." far from it. we found ukrainians taking up arms, forming volunteer brigades to defend the city alongside local police. this volunteer says, "i don't want to live in russia and my brothers in arms don't want that either. we will defend this city or i will die." across the country, groups formed to make home—made petrol bombs. many unite in the face of continuing russian advance, keen to defend their homeland. it's just too dangerous above ground. we've all had to come down, the bbc team here, to shelter underground. it's been clear throughout the day that the increasing level of military ordnance going off quite a few miles away, but getting closer and closer to our position here, it's simply too dangerous to be above ground. i think what needs to be remembered is this is the experience now for millions of people