1.   American officials have said the reactor at Khushab mostly produces plutonium for weapons and can generate enough plutonium for one atomic bomb a year.

2.   But some fear they want reactors mostly to generate plutonium for weapons.

3.   Nor would the North need to complete its new graphite reactor, a threat because it would generate plutonium once it is up and running.

4.   The reprocessing plant at Sellafield generates plutonium from nuclear waste, a key ingredient in atomic weapons.

5.   Yet vastly more plutonium is generated as spent nuclear fuel in civilian power plants.

6.   A research facility, however, would be a threat because it might generate plutonium of weapons-grade quality.

7.   In exchange it is supposed to get South Korean-made light water reactors, which generate little plutonium.