The foaming at the mouth about Israel is a diversion. Iran seeks greater control over ME oil and Shia dominance over Sunnis. The obvious targets of Iranian expansion are in the oil producing regions of Saudi Arabia, the Gulf emirates, and Iraq. All of these regions have large Shia populations, with a history of oppression at the hands of their Sunni leaders. The Iranians believe that, further down the road, nukes plus a near-monoploy in ME oil=Iran as a dominant world power. It won't happen, and there will be massive bloodshed along the way to it not happening--- mostly Muslim blood--- but that won't stop them from trying.
from the article: Ahmadinejad awaits a response