(1) The US invasion of Iraq was the greatest gift the US could have ever given to Iran. It was also a GREAT incentive for them to expedite the acquisition of a nuclear deterrent. I wonder if they noticed we did NOT invade North Korea??
(2) Due to the larger geographical size, larger and more ethnically unified population, and more rugged terrain--expect at least 3 times the casualties: 12,000 US dead and 36, 000 or more amputees, burn victims etc.
So much could be added about WHY Iraq and why Iran is even being considered, but that would lurch too far afield. These paths would reveal the utter stupidity and evil of US foreign policy from Reagan through Bush II. We have sewed the wind and we shall reap the whirlwind.