John Joseph Mearsheimer (born December 14, 1947) is an American political scientist and international relations scholar, who belongs to the realist school of thought. He is the R. Wendell Harrison Distinguished Service Professor at the University of Chicago. He has been described as the most influential realist of his generation.

Mearsheimer is best known for developing the theory of offensive realism, which describes the interaction between great powers as being primarily driven by the rational desire to achieve regional hegemony in an anarchic international system. In accordance with his theory, Mearsheimer believes that China's growing power will likely bring it into conflict with the United States.

In his 2007 book The Israel Lobby and U.S. Foreign Policy, Mearsheimer argues that the Israeli lobby wields disproportionate influence over U.S. foreign policy.

Since 1982, Mearsheimer has been a member of the faculty of the Department of Political Science at the University of Chicago. He became an associate professor in 1984 and a full professor in 1987 and was appointed the R. Wendell Harrison Distinguished Service Professor in 1996. From 1989 to 1992, he served as chairman of the department. He also holds a position as a faculty member in the Committee on International Relations graduate program, and he is a co-director of the Program on International Security Policy.

Mearsheimer's books include Conventional Deterrence (1983), which won the Edgar S. Furniss Jr. Book Award; Nuclear Deterrence: Ethics and Strategy (co-editor, 1985); Liddell Hart and the Weight of History (1988); The Tragedy of Great Power Politics (2001), which won the Lepgold Book Prize; The Israel Lobby and U.S. Foreign Policy (2007); and Why Leaders Lie: The Truth About Lying in International Politics (2011). His articles have appeared in academic journals like International Security and popular magazines like the London Review of Books. He has written op-ed pieces for The New York Times, the Los Angeles Times, and the Chicago Tribune.

Mearsheimer has won several teaching awards. He received the Clark Award for Distinguished Teaching when he was a graduate student at Cornell in 1977, and he won the Quantrell Award for Excellence in Undergraduate Teaching at the University of Chicago in 1985. In addition, he was selected as a Phi Beta Kappa Visiting Scholar for the 1993–1994 academic year. In that capacity, he gave a series of talks at eight colleges and universities. In 2003, he was elected to the American Academy of Arts and Sciences. He is the recipient of the American Political Science Association's 2020 James Madison Award, which is presented every three years to an American political scientist who has made distinguished scholarly contributions. The Award Committee noted that Mearsheimer is "one of the most cited International Relations scholars in the discipline, but his works are read well beyond the academy as well."

Mearsheimer's works are widely read and debated by 21st century students of international relations. A 2017 survey of U.S. international relations faculty ranks him third among "scholars whose work has had the greatest influence on the field of IR in the past 20 years."

Hosted on Acast. See acast.com/privacy for more information.