many countries, many leaders accusing putin and his generals and officers of the same. and actually an investigation is beginning. the icc, the international criminal court, which russia does not belong to, has actually started an investigation because it was asked by 39 nations to do that. >> more than 2.5 million people have fled ukraine since russia's brutal and unprovoked invasion began, and some foreigners have reported discrimination as they try to cross the nation's borders. cnn's zen asher spoke with students about their escape through the war torn country. >> my feet were hurting. i could barely walk, but i kept pushing every second. >> i just lost hope like i'm not going to be able to cross this. >> reporter: born in nigeria the 24-year-old and the 17-year-old were both studying medicine in ukraine when russia's invasion