"I`m not naive enough to think the Iranians will back-down thru negotiations... that`s simply not their character." a There is something to be said for trying to offer Iran something more tangible than threats and a fait-acomplit if they are to 'back down' as you crudely put it. In the recent offer (rejected by Iran)they were expected to hand over all their LEU and receive back on some unspecified date 20% HEU, hardly an offer Iran would be likely to accept unless they were truly 'naive', knowing full well they would quite likely never see the Uranium again(even today Natanz is delayed indefinitely by Russian delays). Their counter offer was to exchange LEU for HEU on Iranian territory simultaneously. So ensuring that Iran would not engage in any further enrichment, whilst ensuring Iran that she would not be at the mercy of Russia and France (and the US of course) who may decide Iran has to wait a little longer than expected for her HEU. Now if there was ever any real intention of a negotiated settlement, the US would not have responded with a hand wave informing Iran that their original offer was non negotiable and not open for discussion. As for your contention about Iranian character, please remember that it was Iran who in 2003 made great efforts to open negotiations with America on nuclear issues as well as Lebanese and Hamas issues. It was however not in the American character to accept such overtures from Iran.
Week of floods kills 22 in Vietnam (DPA)
from the article: Israel can't launch strike against Iran on its own