Governments have a very poor track record when it comes to answering this question. After the Vietnam War, for example, the United States’ armed forces suppressed what it had learned about counter-insurgency, only to rediscover it the hard way in Iraq and Afghanistan.
政府在回答这一问题上的历史记录实在糟糕。比如，越南战争后，美国武装部队将它所学到的反叛乱知识打入冷宫，结果在伊拉克和阿富汗战争又吃了二遍苦头。