Not so much, though, as to get in the way of treating China as an indispensable element in any stabilisation of perilous situations in Korea and Afghanistan. Without China’s active participation, any attempts to immunise Afghanistan against terrorism would be futile. This may be a tall order, since the Russians and the Chinese are getting a “free ride” on US engagement, which contains the jihadism which in central Asia and Xinjiang threatens their own security. So was it, in retrospect, a good idea for Barack Obama to have announced that this coming July will see the beginning of a military drawdown? The question triggers a Vietnam flashback. “I know from personal experience that once you start a drawdown, the road from there is inexorable. I never found an answer when Le Duc Tho was taunting me in the negotiations that if you could not handle Vietnam with half-a-million people, what makes you think you can end it with progressively fewer? We found ourselves in a position where to maintain … a free choice for the population in South Vietnam … we had to keep withdrawing troops, thereby reducing the incentive for the very negotiations in which I was engaged. We will find the same challenge in Afghanistan. I wrote a memorandum to Nixon which said that in the beginning of the withdrawal it will be like salted peanuts; the more you eat, the more you want.”