Iran: Government Promises Students More Death Sentences

"Currently, Iran has enriched its nuclear material to about five percent. For weapons, you need to increase the content of Uranium 235 in uranium ore to at least 54 percent (producing uranium that contains that percentage of the more volatile U-235 form of the nuclear material). This is far above the 5-10 percent minimum needed for nuclear power plants. Normally, Uranium ore is only about .7 percent U-235. Anything over 20 percent enriched can be used for a nuclear bomb. But the most effective and reliable nuclear weapons use 80 percent enriched nuclear material. Iran appears to believe that the UN will not be able to implement more severe sanctions (because China is an Iranian ally)."