The Austrian Review of International and European Law is an annual publication that provides a scholarly forum for the discussion of issues of international and European law, with emphasis on topics of special interest for Austria. Each volume of the Review includes general articles, current developments, and the comprehensive annual digest of Austrian practice in international law, encompassing judicial decisions, executive as well as parliamentary documents relating to international law. The concluding parts of the Review contain longer book reviews and shorter book notes. Volume 24 covers 2019 and features contributions from the conference ’50 Years Vienna Convention on the Law of Treaties (VCLT)’