nick: today, president volodymyr zelenskyy addressed british parliament and borrowed both from churchillnd shakespeare. he compared the fight against russia to britain's fight against germany in world war ii, and vowed, "we would fight russia at sea, in the air. we will fight in the forests, in the fields and on the streets." and he acknowledged that the threat posed by russia to kyiv was existential. and he asked: "the question for us is to be or not to be." judy, the answer was to be. judy: and you could see that in the answers of the ukrainians you spoke with. nick, a question. how meaningful is it seen the corridor, at humanitarian corridor tha-- as it existed today? nick: some 5,000 people were able to escape sumy, both residents and also many trapped students. and some humanitarian aid was allowed to get into sumy. but zelenskyy said today that that represented 1% of what needs to be done. there are more than 1,000 villages and cities across ukraine that don't have any power, don't have any electricity, don't have any basic services. hundreds of thousands are without power and with