Taking “extraterritoriality,” the traditional touchstone for the state-centered allocation of transnational legal authority, as its conceptual starting point the book traces the evolution of transnational legal authority in the course of globalization. It examines various representative transnational legal scenarios, covering issues of, inter alia , the environment, foreign trade and investment, corporate governance, criminal justice, cyberspace, and arms control. The end result is a complex, yet nuanced picture of today’s global governance architecture in which transnational legal authority may be exercised unilaterally or multilaterally; be minimally coordinated internationally or formally institutionalized; reflect a traditional state-centered, a supra-national or “privatized" approach; and be rooted in a single or a multiple-layered normative system.