Alliances among ideological enemies confronting a common foe, or "frenemy" alliances, are unlike coalitions among ideologically-similar states facing comparable threats. Members of frenemy alliances are perpetually torn by two powerful opposing forces.

Frenemies: When Ideological Enemies Ally (Cornell University Press, 2022) shows that shared material threats push these states together while ideological differences pull them apart. Each of these competing forces has dominated the other at critical times. This difference has resulted in stable alliances among ideological enemies in some cases but the delay, dissolution, or failure of these alliances in others.

This book examines how states' susceptibility to major domestic ideological changes and the nature of the ideological differences among countries provide the key to alliance formation or failure. This sophisticated framework is applied to a diverse range of critical historical and contemporary cases, from the failure of British and French leaders to ally with the Soviet Union against Nazi Germany in the 1930s to the likely evolution of the United States' alliance system against a rising China in the early 21st century.

In Frenemies, author Mark Haas develops a groundbreaking argument that explains the origins and durability of alliances among ideological enemies and offers policy-guiding perspectives on a subject at the core of international relations.

Our guests today is Mark Haas, Professor of Political Science at Duquesne University.

Our host is Eleonora Mattiacci, an Associate Professor of Political Science at Amherst College. She is the author of "Volatile States in International Politics" (Oxford University Press, 2023).

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Mark L. Haas, "Frenemies: When Ideological Enemies Ally" (Cornell UP, 2022) 47:06 Share

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Mark L. Haas, "Frenemies: When Ideological Enemies Ally" (Cornell UP, 2022)