What the United States has to do is send a clear message to Iran that they will not be able to develop nuclear weapons. Why endure the difficulty of sanctions if they are not going to be able to develop nuclear weapons anyway?

I have come to believe that a nuclear Iran is not a threat but a benefit to humankind as it may well provide a much needed deterrent to the U.S. and Israel’s unrestrained use of military action and terrorism and their continuing quest for dominance and hegemony in the Middle East.

Every day Saddam remains in power with chemical weapons, biological weapons, and the development of nuclear weapons is a day of danger for the United States.

In the 1990s, the United States offered to help North Korea with its energy needs if it gave up its nuclear weapons programme.

What are the implications of a China that may be on nuclear parity with the United States?

You probably don't need more weapons than what's required to destroy every city on earth. There's only 2,300 cities. So, the United States, by that criteria, only needs 2,300 nuclear weapons - well, we've got more than 25,000!