Over five months, the International Consortium of Investigative Journalists conducted a probe of how Interpol really works. A complex profile of the international police organization emerged after dozens of interviews and reviews of Interpol documents and public records in several countries. Nations aligned with Interpol have used the group not just for chasing murderers and sex offenders, but as a tool against political opponents and refugees. CNN Radio’s Libby Lewis reported and wrote this article and produced a broadcast report of ICIJ’s findings. For more coverage from CNN, including a podcast from the reporter, click here.