In recent weeks there have also been reports in the United States suggesting a resumption of nuclear activity.

BBC: Setting store by military might

Europe has just put through the International Atomic Energy Agency a demand that Iran suspend all nuclear activity pending a Nov. 25 meeting on sanctions.

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Anti-nuclear types argue this kind of activity "lowers the nuclear threshold, " making the use of such weapons more likely.

CENTERFORSECURITYPOLICY: Center For Security Policy

During the Cold War, Hanford was a buzzing hive of activity, eventually becoming the main source of plutonium production for the nation's nuclear weapons program.

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