The United States Defense Secretary Robert Gates has ordered a full inventory of American nuclear weapons after parts of a missile were delivered to Taiwan by mistake.The American military sends nuclear fuses to Taiwan instead of helicopter batteries eighteen months ago.Jonathan Beale have this report from Washington.

"The mistaken delivery of the ballistic missile parts to Taiwan has caused the major embarrassment in the Pentagon.The failure all the more apparent,because it took eighteen months for the U.S. to realize it delivered parts of nuclear weapon instead of the intended helicopter batteries.It is also the second serious lapse involving nuclear weapons.In August,U.S. Air Force bomber was armed with six nuclear-armed cruise missiles as it flew across the United States without the pilots even being aware."