Decisions of international courts and arbitrators, as well as judgments of national courts, are fundamental elements of modern public international law. The International Law Reports is the only publication in the world wholly devoted to the regular and systematic reporting in English of such decisions. It is therefore an absolutely essential work of reference. Volume 170 is devoted to South China Sea Arbitration (Republic of the Philippines versus People's Republic of China) and includes the Award on Jurisdiction and Admissibility of 29 October 2015 together with the Final Award of 12 July 2016.