Even undeniably "puerile" debates can sometimes cough up interesting tidbits, and, on Wednesday, Hillary Clinton proposed an interesting way to deal with Iran's nuclear ambitions: Extend nuclear deterrence to "those countries [in the region] that are willing to go under the security umbrella and forswear their own nuclear [weapons] ambitions." Unfortunately, moderator George Stephanopolous did not ask any follow-up questions, even though Sen. Clinton’s idea certainly merits a closer look.
The concept of a "nuclear umbrella" has been around almost since the Cold War and the nuclear arms race began. At the most basic level, it involves a nuclear- weapons state promising to use its nukes to respond if non-nuclear ally is attacked with nuclear weapons. Cold War strategists hoped that "extending" nuclear deterrence like this would cement important alliances and, crucially, eliminate the need for those countries to develop their own nukes. A nuclear umbrella is thus a tool of both diplomacy and of nonproliferation.
The key question here is credibility. How, for instance, would you convince the
Unfortunately, even in Gulf regimes that are friendly to America
However, the idea is still worth exploring as a contingency plan, and new ways of establishing credibility and commitment might be possible -- for instance, extending a missile-defense "umbrella," even one that doesn't work very well yet. But although technical measures like these may be part of the solution to