Bipartisan realists, the Ron Paul branch of the GOP, and much of the left would all like to believe that Ahmadinejad will be satisfied with just destroying Israel. Those missiles that Iran is building to hit the US with are probably just for show:

Iranian technology is on pace to build a long-range missile that could strike the United States within a decade, a high-level Pentagon official told FOX News... "Most of the intelligence experts predict that sometime before 2015, or in that time frame, the Iranians will have developed the capabilities to threaten the United States, from a missile technology perspective, "Lt. Gen. Henry Obering, chief of the U.S. missile defense program, said Tuesday in a Pentagon interview with FOX News. Of concern Obering said is Iran's ability to take shorter range technology and improving it to longer and longer ranges.

At least Iran won't have 3,000 centrifuges online by the end of the month. And by won't we mean will.

References:
* Ahmadinejad's New Strategy: Just Give Iran Czechoslovakia Israel And We'll Be Satisfied [MR]
* Iran Could Strike U.S. by 2015, U.S. Officials Say [Fox News]
* France: Iran set to run 3,000 centrifuges by late October [JPost]

Previously:
* Mathematical Proof That Negotiating With Iran Is Stupid. Not Wrong. Stupid.
* IAEA: Maybe Iran Is Developing Nukes and Maybe They're Not
* US Threatens Iran With Sanctions. Iran Responds By Starting New Nuke Facility.