Hồ sơ CIA 1979: Tranh chấp biên giới Việt-Trung (Kỳ 1)

http://www.vietlandnews.net/forum/showthread.php/4107-H%E1%BB%93-s%C6%A1-CIA-1979-Tranh-ch%E1%BA%A5p-bi%C3%AAn-gi%E1%BB%9Bi-Vi%E1%BB%87t-Trung-%28K%E1%BB%B3-1%29