never come back. when she tells her father's story, rodena finds the courage to speak. he tried to keep us safe, she says. they want to be doctors, tarek to make his dead father proud and they want comfort, like so many children living through this brutal war. >> that was nbc's bill neely reporting on the impact the civil war is having on syria's children. this saturday will mark three years since the start of that war. a new unicef report out just today says about 5.5 million syrian children are in desperate need of food and shelter and medicine and psychological support. today and tomorrow nbc news is broadcasting a live documentary that will tell the stories of the war's most vulnerable. joining me from damascus is chief global correspondent bill neely and chief medical editor, dr. nancy snyderman.