That u.s. intelligence asset warning of military deaths but a staggering number of well as many as 50,000 ukrainians could die in a conflict. erin mclaughlin is in the capital of kyiv. reporter: on the brink of war, residents inbattle that u.s. intel full-scale invasion by russia the potential toll immense. 25,000 to 50,000 ukrainian civilians could die and another 1 to 5 million may be forced to flee their country, many to nearby poland. elina says she s not going any wrchlt she s training on the weekend with her two teenage boys. are you scared for your family? we re all going to die some day the thing that you can do is you can live your life in dignity. reporter: these ordinary citizens are learning to handle weapons, administer first aid and evacuate the wounded. they re learning potentially