The term governance has emerged within international relations in the course of the 1980s and has become increasingly popular during the 1990s. The are three basic governance mechanisms operating at the international level which have been found to play a crucial role in the international spread of environmental policy innovations: harmonization, imposition and diffusion. In this study, the author analyses the types of the governance, making the distinction between governance and government. International governance is the output of a non-hierarchical network of interlocking international institutions which regulate the behavior of states and other international actors in different issue areas of world politics. Global governance is the output of a non-hierarchical network of international and transnational institutions: not only IGOs and international regimes but also transnational regimes are regulating actors’ behavior. In addition, global governance is equated with multilevel governance, meaning that governance takes place not only at the national and the international level (such as in international governance) but also at the sub-national, regional, and local levels.