EyeRan: calm down everybody, they are years away from having a bomb. And enriched uranium? It took us six months sifting through hundreds of tons of raw uranium to achieve fissionable U235 and even then we only had enough for one single bomb. It's plutonium that Iran wants to make and plutonium is a result of so-called peaceful use of uranium. We take it for granted that they have either stolen or been given the complex plutonim "trigger." It's five years away. Uranium enriched to the commercial use grade of 5% is OK. Bombs require at least 20% ("dirty bomb") and almost all are 90% (Heroshima and up). For a peek at the complexity of enriching uranium GO HERE. If you get as far as "implosion device" you will see what Greenglass stole and gave to Rosenberg. (Th Rosenberg "case")