This book is the first detailed treatment of the approaches taken to enforce competition laws against cross-border cartels (CBCs) from the perspective of young and small competition authorities (more than 70% of the total number of authorities worldwide). No other legal or inter-disciplinary scholarship exists in the market that deals with the issue of a taxonomy of CBCs combined with young/small competition authorities’ problems. The book looks at the extent of the harms caused by CBCs and issues associated with tackling them at a transnational level. It explains why past solutions to problems with cooperation have failed and proposes novel ideas on how to improve cooperation and coordination in certain types of CBC investigations (transnational and regional CBCs). The proposals are based on primary-source information and observations made by the author as part of his work in the UN, and interviews with leading enforcers from young, small, old and large jurisdictions. Young/small competition authorities, competition lawyers and economists, scholars and students within the fields of competition law and international law, and those interested in international cooperation and coordination in the area of cartel enforcement in emerging markets will greatly benefit from this book. It is clearly structured and extensively referenced, providing a valuable guide to the topic.