Well Israel has nukes for a rather good reason - they've been attacked numerous times by numerous foes with the express intention of being wiped off the map. Sure, they may not be above board or legal but it's an understandable position for them to take. Notice how attacks on Israel moved to terrorist since their nukes came online.
Iran, on the other hand, has been developing nukes long before anyone thought the US or any other western nation would launch a ground war in the ME. The nature of their government, even excluding their longstanding and extremely well documented support of international terrorism, makes them a less than ideal nation to posses nuclear weapons.
@MD - sure Iran is not alone in breaking international demands in the region, but the impact of their intentions has far graver possibilities than even an invasion of Iraq. The threats to invade or bomb are there because Iran refuses to stop developing nuclear weapons. It's not a chicken and egg position here. Also, it's not just teh evil US and Jewz who are against the idea - find a single ME country who wants Iran to have nukes and I'll give you a chocolate cupcake
@ecosse - nuthin