family flying. these loopholes still exist. absolutely. thank you. it s the top of the hour and i want to update you on a story that s developing. a bus carrying israeli tourists exploded. the death toll has grown to six. there s a great deal of speculation as to who is to blame for this. elise is covering this story for us. israel is blaming iran for this. why is that? reporter: in recent months they say the israelis have th thwarted atakes. they say they have indications it could be iran. they are saying the explosion was the result of a bomb in a tourist bus. the bus exploded from a bomb within. eyewitnesss are describing accounts of seeing victims on the ground. the defense minister left no doubt about who the israelis think it was. let s take a listen. this is clearly a terrorist attack initiated by probably jihad or any other group under either iran or other groups. we re in a continued fight against them. we re determined to identify who sent them and executed