'In this outstanding volume, Lopez-Claros, Dahl, and Groff document the existential challenges facing our global institutions, from environmental decline and the failure of existing international security mechanisms to mass population flows and the crisis of sovereignty and civil society engagement. The resulting landscape might seem hopeless and overwhelming, if not for the authors' innovative, wide-ranging, and thought-provoking recommendations for reshaping existing institutions to expand their relevance and effectiveness. Their ideas for updating our six-decades-old structures include creating an international peace force, ratifying a United Nations Bill of Rights, reforming the UN Security Council and International Monetary Fund, establishing a civil society chamber, and beyond. Readers may not endorse every one of their suggestions, but they are invited into a fascinating game of 'what if?' and 'why not?' It is an invitation that should not be missed.' Ambassador Donald Steinberg, Board member, Center for Strategic and International Studies