people have sought refuge in poland, two of that country's largest cities are warning they can no longer absorb ukrainian refugees. nbc's ellison barber is in one of those cities, krakow, poland. so, try to describe the struggle with this refugee crisis there. >> reporter: yeah, i mean, you know, we hear so much about people opening their doors, offering rooms, places for people to stay, but what city officials are talking about when they say that they are strained is the system. it's that they are concerned they don't have enough doctors, nurses, teachers, other social welfare programs and needs to assist their own population in addition to the thousands of refugees now calling these cities home, almost overnight. one thing that we heard from an ngo we were speaking to is that they want to help but they feel like there is a lack of organization from the top down, from the polish federal government, once people are coming through the border