John McCain gave a speech in Denver a couple days ago, laying out his views on nuclear weapons. He urged the Joint Chiefs of Staff to engage in a comprehensive review of our nuclear strategy and policy.
From reading the transcript on the Washington Post, he endorsed a variety of sound ideas but few apply to the immediate future.

Our highest priority must be to reduce the danger that nuclear weapons will ever be used. Such weapons, while still important to deter an attack with weapons of mass destruction against us and our allies, represent the most abhorrent and indiscriminate form of warfare known to man. We do, quite literally, possess the means to destroy all of mankind. We must seek to do all we can to ensure that nuclear weapons will never again be used.

William Hartung’s column on Talking Points Memo dissects the speech in more depth, saying that he spoke in limited terms before embracing Reagan’s vision.

McCain endorsed a new arms treaty with Russia, but failed to explain how his plans to exclude Moscow from attending meetings of the G-8 group of industrialized nations and to deploy missile defense components in Poland and the Czech Republic would set the groundwork for such discussions, rather than just antagonizing Russia to the point that its leadership won’t want to negotiate any major deals with Washington.

McCain seemed to soften his opposition to a comprehensive nuclear test ban treaty, a measure he voted against in the Senate in 1999; but he clung to the opponent’s rhetoric about its “shortcomings.”

The U.S. needs the international community to cooperate on economic and financial sanctions against nuclear proliferation. U.S. hesitancy to push for nuclear disarmament is likely seen as hypocrisy at this point. Should McCain win the presidency and if the U.S. pledges to disarm itself and if McCain’s proposals are met (such as the Fissile Material Cut-off Treaty) his “dream” of a nuke-free world could be feasible; but not in today’s international political climate.