The most important question raised by Iran’s Pickaxe Mountain nuclear facility is not whether the United States or Israel can destroy it. But Pickaxe Mountain forces a more difficult question: If Iran continues rebuilding, are the United States and Israel prepared to attack again? That is the strategic reality Pickaxe Mountain exposes. Until then, the United States and Israel face an indefinite and deeply sobering commitment. The real lesson of Pickaxe Mountain is not simply that vigilance must continue.