This article reviews Diarmuid Rossa's Revolt or Revolution: The Constitutional Boundaries of the European Community, which explores the interrelationship between European Community (EC) law and the constitutional law of its members. The review concludes that Revolt or Revolution will be of likely interest to anyone studying European law, comparative legal systems and the philosophy of law, and to North Americans interested in the birth of a federal system and the problems that have arisen from it, and in questions regarding the constitutionality of recently enacted trade agreements. This review also notes that Revolt or Revolution provides a valuable comparison between the application of public international law and the application of EC law in the EC Member States' legal systems, and that the author's focus on the French and the Irish makes the book a useful resource for persons interested in those systems (though the concentration on two countries only leads to the omission of decisions from other countries that contribute important developments in the application of EC law).