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 179 is devoted to the 2016 Partial Award in the Arbitration between Republic of Croatia and the Republic of Slovenia, the 2017 Final Award in the Arbitration between the Republic of Croatia and the Republic of Slovenia and 2017 Opinion 2/15 of the Court of Justice of the European Union concerning the Free Trade Agreement between the European Union and Singapore.