Rational choice approaches to customary international law have gained in prominence in recent years. Although becoming increasingly sophisticated, they are not able to explain all phenomena of customary international law. This contribution claims that there are two different types of unwritten...

Economic approaches are becoming increasingly prominent in international law. A few years ago, Jack Goldsmith and Eric Posner caused a great stir with their account of The Limits of International Law, in which they argued that international law did not have any effect on state conduct. This...

As a result of international legalization, the potential for conflicts of overlapping jurisdictions has multiplied vertically between national and international law, as well as horizontally between national and foreign law. In competition control, the latter type of horizontal overlap between US...