keywords: uranium tehran iran nuclear fuel
text: AP: Iran Moves Toward Nuclear Production TEHRAN, Iran - Iran has produced "a few tons" of the gas needed to enrich uranium, a top nuclear official said Wednesday, confirming the country has defied international demands and taken a necessary step toward producing nuclear fuel - or nuclear weapons.    Uranium hexafluoride gas is the material that, in the next stage, is fed into centrifuges used to enrich uranium...