The Obama administration consistently says that Iran should not be allowed to develop nuclear weapons. But prior to the current unrest in the Islamic Republic, White House Chief of Staff Rahm Emanuel frightened many supporters of Israel in May by appearing to link American efforts to stop Iran from developing nuclear weapons to Israeli actions with regard to the settlements.

This is a disturbing linkage that should be disavowed by the Obama administration. Opposition to a nuclear Iran — which would endanger the entire world — should not be dependent in any way on the issue of settlement expansion.

The current turmoil in Iran may strengthen the Obama administration as it seeks to use diplomacy, sanctions and other nonmilitary means to prevent the development of nuclear weapons. But if these tactics fail, the military option, undesirable and dangerous as it is, must not be taken off the table. If the Obama administration were to shift toward learning to live with a nuclear Iran and attempt to deny Israel the painful option of attacking its nuclear targets as a last resort, that would be troubling indeed. Thankfully, the Obama administration’s point man on this issue, Dennis Ross, shows no signs of weakening American opposition to a nuclear-armed Iran.