Volume 15 (2011) of the Max Planck Yearbook of United Nations Lawdeals with, inter alia, internationalized constitutionalism in ethnically divided societies; the question whether paying ransom to pirates is a humanitarian necessity or a financing of Jihadists; the role of physicians in armed conflicts being reflected in the laws of war; Human Rights Principles and the Human Right to Water and Sanitation; as well as questions surrounding the actual restructuring of the Global Financial System.