Did Bill Clinton sell them the plans?
I wonder if we'll ever know how much that traitor sold us out to the Chicoms? The SOB.
Actually, during the Reagan Administration (1987), Toshiba illegally sold to the USSR the data and tools to make really quiet propellers; undoubtedly, the Sov, er, Russians have shared this data with the Chicoms.
http://www.worldandi.com/specialreport/1991/january/Sa19127.htm