it seems at least for now he has backtracked, and he has done that in afghanistan and samaria -- syria. that is useful to have us there. is useful, but it is not enough to set the real lines but you have to attend to them. the fact that dan coats sent a message to not affect american forces or else, they are essentially attacking forces in afghanistan and syria by supporting the taliban and their test. we do not want that to happen in iraq. setting these red lines, tending to them, and conveying credibly that if they target our people, we will target their people, and we have a whole decade and a half of targeting al qaeda and taliban. -- isis. for deterrence purposes, unless you want this turned on you, do not touch our people. that is what i would argue, those are elements of a policy to deter them from pushing back in the regional arena against us in response to nuclear pressure or pressure on their nuclear program. >> norman, can you comment on that? iran's behavior in the region is our would a problem for us, in syria and lebanon and yemen and iraq. ,omehow, this pressure on iran