Multilateralism has served as a foundation for international cooperation over the past several decades. Championed after the Second World War by the United States and Western Europe, it expanded into a broader global system of governance with the end of the Cold War. Lately, an increasing number of States appear to be disappointed with the existing multilateral arrangements, both at the level of norms and that of institutions. The great powers see unilateral and bilateral strategies, which maximise their political leverage rather than diluting it in multilateral fora, as more effective ways for controlling the course of international affairs.