Iran will the least of the problems. Russia is playing her games(Iran is one of her chess pieces) behind the scenes along with China. The world economy is in a spiral downwards over the long term. If enough countries experience a depression like state at the same time, then those states will be looking for external reasons even if they have to create them to distract the people. That is a very dangerous situation. China’s and Japan’s scuffle over the Senkaku Islands is one such example. Without leadership here at home from anywhere, it only adds to opportunism by other countries to take advantage.
Precisely. Should add though that Iran will be Israel’s problem. And while Israel deals with them, the entire region will be chaotic. (IE - No or reduced oil shipments).