would be more reluctitant -- not completely reluctant -- but more lere luckitant to hit women and children than isis would, whether they consider them the exact equal as far as targeting. and as far as this explosive is concerned, yes, exactly. al qaeda is using ammonium based stuff. but the size of this explosion, based on how small the bomb would have to be, would lead me towards a peroxide-base. >> is there specific rule for u.s. counter terrorist officials to play right now inside the u.k.? >> there's going to be. the people you're looking at are going to have communications with people all over the world. and there is a very robust counter terrorism group in the united states including the nsa who is monitoring everything