The World Bank has published this report which focuses on the benefits of interagency cooperation between tax authorities and law enforcement agencies working on preventing, detecting, and recovering the illicit financial flows derived from tax evasion, corruption, and money laundering. It says that huge benefits would accrue from enhancing interagency cooperation and exploring synergies. Interagency cooperation has an important strategic role to play not only in the context of investigations, but also at the prosecution stage. Clearly, it argues, a “whole-of-government” approach is needed to enable agencies to successfully detect, prosecute, and recover the proceeds of interconnected financial crimes. This approach requires commitment, investment, and coordination at various levels of government to overcome existing barriers.