WASHINGTON (AP) — The Senate Republican leader said Monday the United States should use overwhelming military force against Iran if American intelligence shows that Tehran has decided to build a nuclear weapon.....

A 'Use of Force Resolution' is, of course, how the Iraq fiasco started. Iran is three times as big, with three time the population of Iraq. Determining who has 'decided' what on nuclear arms in Iran may be difficult, as there is no The Decider in Iran. Power is not under one person's control, there are multiple factions. Any attack on Iran would likely give more power to the most extreme pro-nuke faction, and unify the nation behind them.

"An Aipac official noted that this idea originated with Mr. McConnell, not with Aipac.....“My supreme responsibility as prime minister of Israel is to ensure that Israel remains the master of its fate,” Mr. Netanyahu said." NYT

Not even Israel believes Iran can be stopped from producing a nuclear weapon without forces on the ground in Iran, possibly including occupation of the country.  Of course, nuclear armed Israel must be the 'master of its fate', but the same is apparently not true of the Palestinian people in the occupied territories of Israel, or even Iran itself.