A growing and compelling body of research suggests that nuclear weapons may not, in fact, make the world more dangerous, as Obama and most people assume. The bomb may actually make us safer. In this era of rogue states and transnational terrorists, that idea sounds so obviously wrongheaded that few politicians or policymakers are willing to entertain it. But that's a mistake. Knowing the truth about nukes would have a profound impact on government policy. Obama's idealistic campaign, so out of character for a pragmatic administration, may be unlikely to get far (past presidents have tried and failed). But it's not even clear he should make the effort. There are more important measures the U.S. government can and should take to make the real world safer, and these mustn't be ignored in the name of a dreamy ideal (a nuke-free planet) that's both unrealistic and possibly undesirable.
The argument that nuclear weapons can be agents of peace as well as destruction rests on two deceptively simple observations. First, nuclear weapons have not been used since 1945. Second, there's never been a nuclear, or even a nonnuclear, war between two states that possess them. Just stop for a second and think about that: it's hard to overstate how remarkable it is, especially given the singular viciousness of the 20th century. As Kenneth Waltz, the leading "nuclear optimist" and a professor emeritus of political science at UC Berkeley puts it, "We now have 64 years of experience since Hiroshima. It's striking and against all historical precedent that for that substantial period, there has not been any war among nuclear states."
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Nuclear weapons change all that by making the costs of war obvious, inevitable, and unacceptable. Suddenly, when both sides have the ability to turn the other to ashes with the push of a button—and everybody knows it—the basic math shifts. Even the craziest tin-pot dictator is forced to accept that war with a nuclear state is unwinnable and thus not worth the effort. As Waltz puts it, "Why fight if you can't win and might lose everything?"
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Why indeed? The iron logic of deterrence and mutually assured destruction is so compelling, it's led to what's known as the nuclear peace: the virtually unprecedented stretch since the end of World War II in which all the world's major powers have avoided coming to blows.
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But are Kim and Ahmadinejad really scarier and crazier than were Stalin and Mao? It might look that way from Seoul or Tel Aviv, but history says otherwise. Khrushchev, remember, threatened to "bury" the United States, and in 1957, Mao blithely declared that a nuclear war with America wouldn't be so bad because even "if half of mankind died … the whole world would become socialist." Pyongyang and Tehran support terrorism—but so did Moscow and Beijing. And as for seeming suicidal, Michael Desch of the University of Notre Dame points out that Stalin and Mao are the real record holders here: both were responsible for the deaths of some 20 million of their own citizens.
Yet when push came to shove, their regimes balked at nuclear suicide, and so would today's international bogeymen. For all of Ahmadinejad's antics, his power is limited, and the clerical regime has always proved rational and pragmatic when its life is on the line. Revolutionary Iran has never started a war, has done deals with both Washington and Jerusalem, and sued for peace in its war with Iraq (which Saddam started) once it realized it couldn't win. North Korea, meanwhile, is a tiny, impoverished, family-run country with a history of being invaded; its overwhelming preoccupation is survival, and every time it becomes more belligerent it reverses itself a few months later (witness last week, when Pyongyang told Seoul and Washington it was ready to return to the bargaining table). These countries may be brutally oppressive, but nothing in their behavior suggests they have a death wish.
Still, even if Iran or North Korea are deterrable, nuclear pessimists fear they'll give or sell their deadly toys to terrorists, who aren't—for it's hard to bomb a group with no return address. Yet look closely, and the risk of a WMD handoff starts to seem overblown. For one thing, assuming Iran is able to actually build a nuke, Desch explains that "it doesn't make sense that they'd then give something they regard as central to their survival to groups like Hizbullah, over which they have limited control. As for Al Qaeda, they don't even share common interests. Why would the mullahs give Osama bin Laden the crown jewels?" To do so would be fatal, for Washington has made it very clear that it would regard any terrorist use of a WMD as an attack by the country that supplied it—and would respond accordingly.
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Put this all together and nuclear weapons start to seem a lot less frightening. So why have so few people in Washington recognized this? Most of us suffer from what Desch calls a nuclear phobia, an irrational fear that's grounded in good evidence—nuclear weapons are terrifying—but that keeps us from making clear, coldblooded calculations about just how dangerous possessing them actually is. The logic of nuclear peace rests on a scary bargain: you accept a small chance that something extremely bad will happen in exchange for a much bigger chance that something very bad—conventional war—won't happen. This may well be a rational bet to take, especially if that first risk is very small indeed. But it's a tough case to make to the public.
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The eight-page letter — written by Iran's chief envoy to the U.N. nuclear agency in Vienna — denounces Washington's allegations against the Islamic Republic as "fabricated, baseless and false." The letter does not specify what documents Iran is alleging were forged.
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