A nuclear Iran cannot be tolerated. A nuclear Iran would potentially disrupt the
entire Middle East. A nuclear Iran would
pose a potentially fatal threat to Israel.
A nuclear Iran could possibly develop weapons with the capability to
reach America. Also, a nuclear Iran could
sell these weapons to terrorist groups in the Middle East.
In the Nuclear Proliferation Treaty, it is a right of all nations to enrich nuclear materials for medical use. Iran has not reached the point of being able to produce weapons grade uranium, nor has it produced a weapon, thus it has not broken the treaty. Also, to say that a nuclear Iran is "intolerable" is in some sense a moral or ethical judgment; a nuclear Soviet Union (and in fact a nuclear U.S.) is in some sense intolerable, since the fate of humanity is in doubt, and yet we do tolerate it. If MAD works for us, why not for Iran?