echoing the call for a thorough investigation. >> 298 innocent people have been killed. people who had no part in any conflict in europe, people who were simply living their lives. now, their lives have been snuffed out. in the most horrific way. and that's why this investigation needs to go ahead and this is why the standing of all parties will, in the end, be determined by the foreigners and the completeness of their -- of their cooperation with this investigation. >> this is such an unspeakable tragedy. 298 people on that flight, mh-17. and the crash has torn one australian family apart. >> khera belanger has the story of three children and their grandfather, all of whom died when the plane came down. >> reporter: the parents of