Supporting an Islamist terrorist-state with nuclear weapons that is Pakistan is worse than aiding Iran.
China is is helping with the assistance of AQ Khan(nuclear Johnny Appleseed).China has supplied Pakistan with nuclear materials and expertise and has provided critical assistance in the construction of Pakistan’s nuclear facilities.China has providing missiles and aircraft to Pakistan at the same time we are providing planes and other war material including intelligence.China wants to extend their influence into Central Asia.China naturally thinks on a grand scale.
http://www.nytimes.com/2011/01/03/world/asia/03china.html?pagewanted=all