What is the current state of thinking about global governance? Can the United Nations be reformed and modernized? Is it legal, ethical or desirable for states to invade other states in the name of humanitarian intervention?Thomas G. Weiss has been contemplating these significant issues throughout the course of his illustrious career. This collection presents his most important contributions to debates (which he has often helped to frame and shape) on UN Reform, non-state actors and global governance and humanitarian action in a turbulent world.A substantial new introduction brings these issues up-to-date and suggest fruitful new avenues for research. Thinking about Global Governance should be read by all graduate students in these areas and is an excellent resource for faculty and researchers.