I saw a very interesting documentary on PBS's Frontline last night titled Searching for Secrets. It chronicled an inside look at the Iran nuclear crisis through interviews with US, IAEA, and Iranian officials, along with actual footage inside Iran.
The show pretty much confirmed my assertions made in a prior post, nuclear illogic, where I put forth the theory that Bush's pre-emptive war in Iraq has precipitated the current situation. Iran feels that it has never been stronger than it currently is, and the that US has never been weaker in its ability to confront Iran. Iran feels that the pre-emptive action doctrine is too threatening to ignore.
So, once again, it shows that while reactive actions like Afghanistan can be a stabilizing factor, pre-emptive actions lead to destabilizing our own security.