Look at this damn Iranian topographical map. Most of the country is covered in mountains.
If Trump is really stupid enough to invade Iran, the Taliban in Afghanistan will enter Iran to fight. They are the army that knows mountain warfare best in the world.
The whole war will destroy the US economy and turn Iran into a cesspool. A large number of extremist Islamic terrorists will emerge, and nothing will be resolved.

>>507458071
If war really breaks out, it will be a disaster.
This will lead to the Afghan Taliban entering Iran to fight, and no one knows how to fight in the mountains better than the Afghans.