being. the unhcr says what they're worried about is that the next wave of refugees won't have the same connections outside the country, won't have the same resources and therefore will be much more vulnerable. most people, almost everyone that we talked to said they, given a choice, wouldn't leave at all. they're less worried about where they're going and more worried about having a homeland to come back to. and isa one more point on the humanitarian corridors, that's that even if 5000 people are getting out of sumy that's a drop in a bucket in a city of a quarter of a million people. mariupol, the ukrainians estimate there's 200,000 people who want to get out of that city. even if you have one or two days of corridors, that's not going to work. they'll have to work long term to get everyone who wants to leave actually evacuated. >> yes, ever deepening humanitarian crisis. you'll keep our eyes peeled.