Following is a excerpt from the OP-ED Page of the New York Times of 
Saturday, September 10, 1994

Dangerous Embrace

by William C. Triplett 2d

......

There may also be a hidden agenda for the Chinese.  According to Nicholas 
Eftimides, a civilian with the Defence Intelligence Agency, "China's most
productive method of legally accquiring foreign technology is to send
scientists overseas on scholarly exchange programs.''  The FBI has reported
that in the mid-1980's attentive Chinese scientists visiting the Lawrence 
Livermore National Laboratories acquired enough technology to produce
their own neutron bomb.

......