I was sufficiently aware of Mao Zedong’s attempts to export ‘people’s war’ to believe that the United States could not afford to lose in Vietnam. In that, too, I was distinctly a man of my times. It proved to be a disastrously wrong position. The problem was that I knew too much about the international Communist movement and not enough about the United States government and its Department of Defense. I was also in those years irritated by campus antiwar protesters, who seemed to me self-indulgent as well as sanctimonious and who had so clearly not done their homework [on the history of communism in East Asia]… As it turned out, however, they understood far better than I did the impulses of a Robert McNamara, a McGeorge Bundy, or a Walt Rostow. They grasped something essential about the nature of America’s imperial role in the world that I had failed to perceive. In retrospect, I wish I had stood with the antiwar protest movement. For all its naïveté and unruliness, it was right and American policy wrong.