“I call it the Madman Theory”

The madman theory is a political strategy associated with U.S. President Richard Nixon, aimed at convincing adversaries that he was irrational and unpredictable. This perceived volatility was intended to deter provocation and compel opponents to negotiate out of fear of an extreme response.

Nixon applied the theory during the Vietnam War, seeking to pressure North Vietnam into peace talks. His chief of staff, H.R. Haldeman, recorded Nixon’s goal of convincing adversaries that he was willing to take extreme measures, including nuclear action. The administration exemplified this approach in October 1969 by placing U.S. forces on high alert and conducting nuclear-armed bomber flights near Soviet borders.

Nixon also reportedly discussed drastic options, such as nuclear strikes or coalition governance, with South Vietnamese President Nguyen Van Thieu. Additionally, actions like the 1970 incursion into Cambodia reflected the strategy’s use to influence negotiations.

Nixon's White House Chief of Staff H.R. Haldeman wrote in The Ends of Power that Nixon had explained to him:

I call it the Madman Theory, Bob. I want the North Vietnamese to believe I've reached the point where I might do anything to stop the war. We'll just slip the word to them that, "for God's sake, you know Nixon is obsessed about communism. We can't restrain him when he's angry—and he has his hand on the nuclear button" and Ho Chi Minh himself will be in Paris in two days begging for peace.

Daniel Ellsberg explained the concept in a 1980 talk: