Michael Pillsbury在他的“百年马拉松”中有这么一段（p77)：

The Chines not only sold the weapons to us to give to the rebels, but also advised us how to conduct these covert operations. From their advice emerged a few lessons about Chinese strategy toward a declining hegemon, in this case the Soviet Union. First, the Chinese emphasized that we had to identify key Soviet vulnerabilities to exploit. One tactic, they explained, was to raise the cost of empire. What I fist proposed the option of suupplying Stinger antiaircraft missiles to the Afghan and Angolan rebels, the Chinese were delighted at the high costs that these weapons would impose, in the form of destroyed Soviet helicopters and jet fighters.