on march 9th, a russian air strike hit this maternity hospital in mariupol. killing at least five people, and leaving more than a dozen injured and countless people completely traumatized. much of the world was shocked by the sheer brutality of that strike. russia said the attack was legitimate because ukrainian troops had allegedly overtaken the civilian facilities. well, cnn looked into this incident using modeling technology, satellite images, and witness' account as katie polglase reports, there is not a shred of evidence to support the russian' take. >> reporter: kharkiv. melitopol. now, mariupol. despite being an apparent war crime, medical facilities have been repeatedly hit by russia since its invasion of ukraine.