In international relations, multilateralism refers to an alliance of multiple countries pursuing a common goal. Multilateralism, in the form of membership in international institutions, serves to bind powerful nations, discourage unilateralism, and gives small powers a voice and influence that they could not otherwise exercise. For a small power to influence a great power, the Lilliputian strategy of small countries banding together to collectively bind a larger one can be effective.
Environmental governance (EG) consist of a system of laws, norms, rules, policies and practices that dictate how the board members of an environment related regulatory body should manage and oversee the affairs of any environment related regulatory body which is responsible for ensuring sustainability (sustainable development) and manage all human activities—political, social and economic. Environmental governance includes government, business and civil society, and emphasizes whole system management.
Global governance refers to institutions that coordinate the behavior of transnational actors, facilitate cooperation, resolve disputes, and alleviate collective action problems. Global governance broadly entails making, monitoring, and enforcing rules. Within global governance, a variety of types of actors – not just states – exercise power. Governance is thus broader than government. Global governance began in the mid-19th century. It became particularly prominent in the aftermath of World War I, and more so after the end of World War II.