No 'linkage'

I've said before that I don't think reaching a nuclear deal with Iran means that Iran will (or should) become a U.S. "partner" in the region.  This seems to be a hard point to get across, judging from recent discussions of policy toward Iran that I've encountered (I'm not giving specific refs. now, perhaps later).  A nuclear deal does not imply that the P-5 countries would thereby approve of any aspects of Iranian foreign policy.  A nuclear deal would not legitimize Iranian support of Hezbollah, for instance.  I'm not entirely sure why various people seem to find this so difficult to understand, unless they're pretending not to do so because such a pretense serves their purposes.