If Iran becomes a nuclear power?

[NJ5]

@hasanraza: If Israel attacks Iran, USA will soon follow (or at least give some support). Europe might also follow too, especially if Iran starts disrupting the supply of oil. 17% of the world's oil is shipped through the strait of Hormuz (near Iran).

Currently, USA, France, Brazil and UK are doing a military exercise which may be intended as practice for war with Iran:

http://www.news.navy.mil/search/display.asp?story_id=38478

PS: If this happens, the price of fuel and other forms of energy will explode, and the current crisis will seem like child's play.