than 2 million ukrainian refugees who crossed the border remain in poland and it has proved to be a massive strain. the number, the nature of the female and child population that makes it particularly difficult to deal with. what has been extraordinary is the outpouring from ordinary people who wanted to help. we'll show you the images here of people who continue to trickle through this border. one of the other points is that though there are bottlenecks that europeans are trying to iron out now to try to help, the vast majority of people want to stay here next to the border because they believe this is a war that will be won and all they want is to go home. >> melissa bell from the poland/ukrainian border, thank you very much. let's dig deeper on this conflict with "time" magazine contributor kim dozer. we're joined by mark kimmitt, the assistant secretary of state for political and military