A Theory of Disfunctionality: The European Micro-states as Disfunctional States in the International System explains the continuing survival of European micro-states as members of the international system. Micro-states are small sovereign states with populations of 1 million or less, of which there are 10 in Europe. The existence of micro-states raises a number of questions about the nature of statehood, the recognition of sovereignty, and the ability of such states to maintain a presence in international politics. This book establishes the 'theory of disfunctionality' in which a functional account of statehood is proposed. It is argued that the state has six functions-but the micro-states are so small that they 'contract out' some state functions to others in the international system. By doing this, the micro-states ensure their continuing survival in international politics. The book, which focuses on two case studies-Monaco and Luxembourg-, will be of particular interest to those involved in small state studies including scholars, students, practitioners and policy-makers, as well as those researching International Relations and state theory.