have 160,000 people being slaughtered or iraq where thousands have died in the isis advance on baghdad but still, a flash point in the middle east. to go by history, we have every several years, israel has had a round of fighting with hamas and other terrorist elements in gaza. i think the idea again is to strike a balance between retaliating for this atrocious murder of the three israeli teenagers but not triggering off another round of fightinging yeah, and we ll see obviously how that proceeds from here. ambassador oren, thank you so much for being with us. the al qaeda spinoff that sent the underwear bomber on a flight to the u.s. may be working on more frightening explosives that cannot be detected by today s air sport screening devices. u.s. authorities are racing to catch up here. cnn chief national security