This book is about the reach of law beyond state borders from a Canadian perspective. It investigates the scope of the legal and practical power of Canada to assert, and to respond to foreign assertions of, extraterritorial jurisdiction. Ultimately, the authors articulate a theoretical and analytical framework to aid decision making by law and policy makers when Canada is faced with the issue of whether to act extraterritorially. The book revisits Canadian jurisdictional principles and practices in a way that will resonate with lawyers and legal policy makers of all kinds.