Fast facts about nuclear power

Could help an aspiring nuclear power overcome a major technical hurdle and vastly increase its options for delivery of a nuclear explosive.

Could theoretically help North Korea — which detonated a nuclear device in a 2006 test — to couple a nuclear warhead with its Nodong missile, which has a proven range of 1,300 kilometers.

Could theoretically help Iran, which also possesses medium-range ballistic missiles and is believed to be seeking the capability to build nuclear weapons in the future.