In this episode of Ruled by Reason, AAI goes international! Enforcers from the U.S., New Zealand, UK and Chile talk with Kathleen Bradish, Vice President and Director of Legal Advocacy, about their agencies' cross-border work to stop price-fixing cartels. Leah McCoy, Juan Correa, Louise Baner, and Grant Chamberlain, whose agencies are heading up the International Competition Network's Cartel Working Group, tell us about the important role of the CWG in advancing cross-border enforcement and give us a preview of some of CWG's exciting new projects. These include initiatives that reflect on-going, long-term concerns of international enforcers, like improving international cooperation and addressing obstruction. Other projects address emerging challenges like the specter of algorithmic collusion and the effect of complex networks of privacy laws on evidence collection. Our conversation concludes with Chile's and New Zealand's perspective on how ICN, and the Cartel Working Group in particular, can aid newer and smaller agencies.