The practice of international litigation has been transformed in recent decades. Central to the development of international litigation as a field has been the remarkable career of Lord Collins: scholar, practitioner, judge and arbitrator. In this collection in his honour, inspired by Collinss own late 20th Century classic Essays in International Litigation and the Conflict of Laws (OUP 1994), Jonathan Harris and Campbell McLachlan present the research of sixteen jurists of international renown. They offer a fresh appraisal of key developments across the field: from climate litigation to offshore trusts, the impact of Brexit and the new tools for international judicial cooperation. Organised into five parts, the book offers a set of unique insights into the conduct of cross-border litigation; the judicial role in international cases; the shape of English private international law; the conduct of international arbitration; and the interface with public international law. As a whole, the book offers the opportunity to reflect on the deeper purposes of international litigation in the pursuit of comity.