When the Soviets ended the agreement in 1961, the U.S. blew a 1, 280-foot-wide crater into the Nevada desert with a 104-kiloton bomb.

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He has vowed to turn Brazil into a military power, stating that the government should resume development and production of a 30-kiloton nuclear bomb and proliferate military high technology to any regime it wishes.

CENTERFORSECURITYPOLICY: US does little as hemispheric crisis grows

But that would not reduce confidence in the existing stockpiles, nor would it prevent a nation from building a fairly simple fission bomb in the 1 kiloton to 20 kiloton range.

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