This book is an in-depth study of how to promote integrity and avoid fraud & corruption in the work of international organisations, in particular multilateral development banks, such as the European Investment Bank, World Bank, Asian/Inter-American/African Development Banks and European Bank for Reconstruction and Development. A number of issues are reviewed, including procurement, compliance, corporate governance, business ethics, anti money laundering and a number of relevant case studies highlighted. In addition, effective methods and tools of prevention, proactive monitoring and detection are reviewed and, if misconduct is identified, sanctioning the perpetrators of such misconduct is discussed.