Rebellion: How Antiliberalism Is Tearing America Apart — Again is a 2024 book authored by Robert Kagan, a prominent historian and senior fellow at the Brookings Institution. The book examines the rise and resurgence of antiliberalism in U.S. politics, particularly through the lens of the MAGA movement associated with former President Donald Trump. Kagan argues that this movement represents a rebellion against the liberal democratic order established by the Founding Fathers, posing significant threats to democratic institutions, the rule of law, and the international liberal order that the United States has championed since World War II. Drawing on historical parallels, Kagan traces the roots of antiliberal sentiments within the Republican Party and warns of the potential for authoritarianism if these trends continue unchecked. The publication gained attention following Kagan's viral Washington Post essay in 2023, which prompted an early release of the book. It critiques how 'normie' Republicans have been marginalized within the party, allowing illiberal forces to dominate and erode the foundations of liberal democracy. Kagan's analysis is informed by his expertise in foreign policy and neoconservatism, emphasizing the interconnectedness of domestic political decay and global stability. The book has been reviewed and discussed in major outlets like The New York Times and The Washington Post, highlighting its relevance amid ongoing debates about the future of American democracy. As a work of political nonfiction, Rebellion underscores the urgency of defending liberal principles against populist and nationalist challenges, portraying the current crisis as a recurring pattern in American history where antiliberal rebellions have threatened national unity.