border that continue more than one month after this war began, of women fleeing for their lives and really carrying only their children, christi. >> a humanitarian crisis with no end in sight. melissa bell from poland, thank you so much. more than 3.5 million people have left ukraine since russia's invasion, and many of those helping the refugees actually have no connection to ukraine at all. >> yeah, that includes an ambulance driver who is helping critically ill ukrainians escape the war. here's cnn's ed lavendera. >> reporter: the air raid sirens no later starlet diedrich. >> the sirens are telling us it's no danger anymore. >> reporter: with that, he eases the nerves of a mother and his two children that he's just picked up at the train station. tonight, he will drive them to poland. diedrich gunestad struggles to explain how a 27-year-old from norway has found himself driving