How is Progress Constructed in International Legal Theory?

There is a tendency in international legal discourse to tell the story of international law as a story of progress. 'Progress' is a concept which is tied to the process of secularization and Western 18th and 19th century philosophy. It still inspires the debate on international law – despite all setbacks in 'real history'. This article argues that progress narratives in the international legal discourse are constructed by – more or less subtle – argumentative techniques. It highlights four such techniques – four 'bundles of arguments' – which play a key role: ascending periodization, proving increasing value-orientation of international law, detection of positive trends, and paradigm shift-talk. The article offers an explanation of why the pro gress argument often succeeds in international legal discourse.