CNN CNN Newsroom Live October 7, 2015 03:54:00
Clear that it was a mistake but the strike was called in by u.s. forces and therefore, u.s. forces have a responsibility and will through the investigation answer the questions here. >> nic, is there any more clarity about the chain of events that actually led up to this? >> reporter: doctors without borders have given some information which we didn't have before which gives some vital clues into the sequence of events. they say that the aircraft flew around over the hospital, large compound, single building, there was only one building in that compound that was hit. a lot of others were spare...