Ryan Griffiths, professor of political science, has published The Disunited States: Threats of Secession in Red and Blue America and Why They Won't Work (Oxford University Press, 2025).

This book examines polarization and division in the United States and explores the possibility of American secession. Through interviews with secessionist advocates, Griffiths analyzes the argument for a national divorce along political lines, ultimately arguing that secession is not a viable solution to the country’s political divide. The Disunited States draws on global examples of secession, warning of its dangers and advocating instead for finding common ground to address national divisions.

Griffiths specializes in the study of secession, sovereignty, state systems and international order. He is the co-author of Before Colonization: Non-Western States and Systems in the Nineteenth Century (Columbia University Press, 2025) and the author of Secession and the Sovereignty Game: Strategy and Tactics for Aspiring Nations (Cornell University Press, 2021), which won the 2021 IEA Best Book Award.

He is currently the research co-director for International and Intra-State Conflict and a senior research associate for the Program for the Advancement of Research on Conflict and Collaboration.

From the publisher:

Is the breakup of an increasingly polarized America into separate red and blue countries even possible?

There is a growing interest in American secession. In February 2023, Marjorie Taylor Greene tweeted that "We need a national divorce...We need to separate by red states and blue states." Recent movements like Yes California have called for a national divorce along political lines. A 2023 Axios poll shows that 20 percent of Americans favor a national divorce. These trends show a sincere interest in American secession, and they will likely increase in the aftermath of the 2024 Presidential election.

Proponents of secession make three arguments: the two sides have irreconcilable differences; secession is a legal right; and smaller political units are better. Through interviews with secessionist advocates in America, Ryan Griffiths explores the case for why Red America and Blue America should split up.

But as The Disunited States shows, these arguments are fundamentally incorrect. Secession is the wrong solution to the problem of polarization. Red and Blue America are not neatly sorted and geographically concentrated. Splitting the two parts would require a dangerous unmixing of the population, one that could spiral into violence and state collapse. Drawing on his expertise on secessionism worldwide, he shows how the process has played out internationally-and usually disastrously. Ultimately, this book will disabuse readers of the belief that secession will fix America's problems. Rather than focus on national divorce as a solution, the better course of action is to seek common ground.