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.

I would hazard the statement that in the broad sense [Ho Chi Minh's] ideas had triumphed, since the communist victory in Vietnam was a consequence of political, diplomatic, and psychological factors more than military ones. That is a tribute to the ideas that he introduced in his life and thought.

In the end, many of his more militant colleagues began to feel that [Ho Chi Minh's] tendency to compromise, and his reluctance to confront the enemy directly, was a sign of weakness. The decision to confront the United States in 1963-1965 was a tacit recognition that Ho's approach had failed.

None of Ho Chi Minh's colleagues was as dedicated to the use of political struggle, psychological warfare, and diplomatic means as he was.

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 decided that after returning to the US to pursue an academic career I would eventually study the life of Ho Chi Minh to find the secret of his success.

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.