China and Russia want Iran to have nuclear weapons
Recent developments in Iran confirm that China is providing Tehran with critical defense technologies and weapons systems, including some that violate stated Chinese policies aimed at preventing nuclear proliferation.
Proliferation of defense industrial know-how and brain power from Russia, Ukraine and other former Soviet republics to Iran — specifically advanced anti-ship missiles, nuclear technology and ballistic-missile designs — has been at the top of U.S. government concerns since the fall of the Soviet Union in 1991.
A CIA report to Congress made public in 2009 states that assistance from Chinese and Russian entities “has helped Iran move toward self-sufficiency in the production of ballistic missiles.”
And now you know why the United States government doesn't want Iran to have a nuclear weapon...because Russia and China benefit.
Never be afraid to ask simple questions.