You need to think this through, friend. On the one hand, Ahmadinejad thinks Bush is a pussy (your view) and on the other, he’ll think he’s responsible for getting the Secretary of State fired.
Iran is doing nothing to deserve negotiations, and it even humiliates the US.
Don’t forget that every humiliation that the US do not answer to is a sign or Iranian power for the other states of the region.
It is a step backward.