Will NATO invade Iran?

As an Iranian citizen, I don't think war will happen in close time. Iraq and Afghanistan are unstable yet and USA needs time to fill economic vacancy caused by war in Iraq and Afghanistan. I think economic sanctions and support of opposition groups are most important policies of USA against Iran's government. My intention from opposition groups is non-Persian opposition groups those want to end Persian totalitarianism and powerful centralism in Iran. If central government of Iran weakens, USA and world won't have any concern about Iran. Iran has multinational/ethnical structure (Persian consist of 30% of population of Iran) and this is a great advantage. It isn't really necessary to war with Iran.