Sun Tzu's ideas as expressed above had a profound effect on Ho Chi Minh, who sought to defeat both the French and the Americans without recourse to violence - or at least to conventional battle tactics.

Many of the ideas of Sun Tzu and Mao Zedong came naturally to the young Ho Chi Minh, who would probably have applied the same strategy even had he not been aware of them.

When he served in China during World War II, [Ho Chi Minh] learned about Mao Zedong's tactics of guerrilla war against the Japanese (and later against Chiang Kai-shek's forces), and he translated some of Mao's works into Vietnamese. But it is clear that his own ideas on how to counter the enemy ran along the same lines.

The influence of Sun Tzu on other North Vietnamese military strategists is harder to answer. Certainly many of the key leaders in Hanoi were aware of Sun Tzu and made use of his ideas - Vo Nguyen Giap applied many of these ideas in seeking out weak elements in the enemy's defenses, as did Truong Chinh, whose famous treatise, The Resistance Will Win (1947), cited the ideas of Mao Zedong as a model for the North Vietnamese to follow.

I first became interested in Ho Chi Minh in 1964-1965 while I was stationed at the U.S. Embassy in South Vietnam as a foreign service officer with the Department of State. The government in Saigon was at the point of collapse and the [Lyndon] Johnson administration was preparing to send U.S. combat troops to prevent a communist victory there. I became convinced that the U.S. effort would not succeed because of the lack of conviction in the Saigon government compared to the discipline and sense of self-sacrifice among the Viet Cong.

There were various aspects of Sun Tzu's approach that appealed to Ho Chi Minh: a) to learn to understand both the enemy and yourself, to seek out his weaknesses and your own strengths, and act accordingly, b) to make ample use of subterfuge and stratagem in order to defeat or disarm your adversary, and c) to use outright violence only when absolutely necessary in the belief that political struggle was more effective than military struggle.

I did not feel - in President [J.F.] Kennedy's words - that we could win the war for [the government in Saigon]. When I sought the reason for the dedication shown by the enemy, it seemed to me that the leadership and charisma shown by Ho Chi Minh was a major part of the answer.