Umbrella - Rihanna's or Obama's?

Obama’s nuclear umbrella plan is stupid on so many levels. Perhaps, he has been listening to Rihanna’s Umbrella song and he has based his strategic understanding on the lyrics. Any Israeli government going along with it, would also be grossly negligent. Let's look at what America and Israel have to lose.

America

• Attack on Israel will not come directly from Iran. Therefore no response will be possible because there will be plausible deniability. Attack will come from a terrorist group handed the weapons surreptiously by Iran, and either Hamas, Hezbollah, Islamic Jihad (as if there is any other sort of jihad), or a newly named terrorist group will launch it from the borders of Gaza, Lebanon or Judea/Samaria. Therefore, the USA and Israel will be unable to say definitively that Iran attacked, and a response’s rationale would be undermined.
• Why would the USA attack Iran in any event? The attack is not on them, so why would the US populace open itself to attack?
• Iran’s leaders do not care about a US response. It is part of their doomsday belief, and they have stated it will bring about the return of the hidden Imam. They don’t care if Iran is destroyed, their first loyalty is to Islam and they wish for a judgment day. A nuclear attack is no threat to them, and the men that die can go off to heaven as martyrs to enjoy their virgins in eternal sexual bliss.
• In any event, given Islam’s bloody borders, does the free world really want Iran producing nuclear weapons to hand out to their designated terrorists? This gives them a free hand to carry on with the production.

Israel

• Forgoing the sovereign right of a nation to defend itself
• Israel’s tiny size means it cannot afford to take a nuclear hit and survive in a radioactive landscape
• Israel would be trusting America to respond when then is no real advantage to the USA. It will be too late to call the USA on a failure to respond, because the damage would already be done.