Iran basically choose the nuclear option by pre-balkanizing their military. Meaning even if they can get one general/province to come to the table, there are still tons more that won’t and will continue to fight.

They could have negotiated with the Ayatollah, but now that he’s gone they have to negotiate with dozens of angry, armed, forces. Most of which already have dispersed responsibility within themselves.

Literally no way to stop this since even one group rejecting a negotiation means the whole thing kicks back off.