The UN’s IAEA has reported that Iran has 55.6 kilograms (122.6 pounds) of 60% enriched uranium. The body says this means Iran is able to produce up to 25 kg (55 lbs) of 90% enriched uranium, enough for a nuclear bomb. The real story could be even more concerning. Consider the hoary phrase, “There’s more than one way to skin a cat.” Similarly, there’s more than one way to make a nuclear bomb. The Union of Concerned Scientists has said that it might be possible to produce a fission-type nuclear weapon with as little as 15kg (33 lbs) of highly...