You know what. Its up to those nations in the region to deal with the crazy mullahs. Obama and Bush did nothing to deal with Iran’s overt acts of terrorism against America such as the manufacture and distribution of IEDs to the jihadists in Iraq. If there are overt acts against Americans traceable to Iran, doubt Trump will be passive. The Iranians know it. However our “allies” in the region need to deal with Iran on their own. You simply don’t understand the need the Iranians have to be noticed and engaged.
I also was in Saudi Arabia during the entire Gulf War from start to finish. There is no way our allies in the region can deal with Iran alone. They need our support and we have global strategic interests at stake. The Gulf region is the world's largest supplier of exportable oil, which fuels the global economy.
Militant Islamic fundamentalism began in Iran in 1979. It is spreading like a cancer around the world. The only way it can be stopped entirely is regime change in Iran. There is no negotiating with the mullahs and their Supreme Leader. Obama's deal with Iran supported by signatories like Russia, China, and the UK ensures that Iran will get nuclear weapons.