Imbalance of Power: US Hegemony and International Order Edited by: I. William Zartman Now that the clear delineations of the cold War era are behind us, what are the contours of the international system? And what does the new reality mean for the United States? Provocatively applying IR theory to the world of policy analysis, Imbalance power showcases current policy debates about the nature of both, international order and the role of the United States within it.