‘States’ considers the enduring institution that organizes the people of the world. States remain the key actors in international relations. Theoretically, a state must have a defined territory, a permanent population and a government capable of controlling its territory and conducting international relations. States also require some measure of external recognition. In spite of the obvious limits of unilateralism, the power of the sovereign state has prevented a strengthening of multilateralism. States have numerous different characters: coercive, liberal, totalitarian, failed states and personal tyrannies. States cannot only be judged from this character as even liberal states engage in military actions on a regular basis. Citizens' contribution to state power matters.