Well, let's see. First off I have been categorically correct on Iran and only now are the major public entities agreeing with the rest of the "common sense" crowd with IQ's over the norm, who have been right all along ... in spades.
Second, the answer is very simple if one keeps up on international regional news as opposed to American news outlets.
So Iran's intentions are a mystery to you. Hmmm ... I'm a bit surprised at ur lack of base knowledge about a subject you post quite a bit about...
Okay, here's a very BASIC refresher course on what Iran is all about.
Iran wants nuclear power. Iran however does not need nuclear power. Iran has the second largest natural gas fields in the world, and stands at 950 Trillion feet, enough for all of their energy needs for 230 years. Besides that they sell 4 million barrels of oil per day for extra revenue. They are the world's 4th largest producer of oil. So nuclear energy is absurd. It's incredibly expensive to build and maintain, and Iran has already signed a treaty to NOT build nuclear reactors (a treaty they are already in clear violation of).
Iran can realize all sorts of geopolitical advantages to having the bomb.
Iran's nuclear missiles would be a permanent weight placed against Israel and that is the optimist side of it.
Iran could go down a darker road and claim for Persian Shiites the crown of radical Islam by destroying Israel once and for all.
One must think regionally at times, for they most certainly do. Iran has all sorts of disputes with the SUNNI Arab world over oil production and pricing, disputed territory, and Islamic doctrine (not the least conflict, by their standards).
AA nuclear armed Iran would terrify most of the Arab Middle east, and couold possibly start a nuclear arms race in that region. Wouldn't that be just ducky?!
Iran also gives billions to Hamas and Hezzy. This would give them far greater power over the west than previously held. How long do you think it would be after Iran gets their many many bombs in order before one is given to Hamas? Trust them to be responsible with a nuke?
There, we're up to speed on the BASICS. Keep notes if you need to.