The legitimacy of customary international law / Stefan Oeter -- The economics of informal international law : an empirical assessment / Stefan Voigt -- Law and technology of data privacy : a case for international harmonization / Haksoo Ko -- Private military contractors : mercenaries outside the scope of law? / Thilo Marauhn -- Some observations on the economics of comity / Christopher R. Drahozal -- Fighting maritime piracy : on possible actions and consequences / Birgit Feldtmann -- A success? : reflections on the first ten years of the International Criminal Court / Florian Jessberger, Julia Geneuss -- The European constitutional impossibility theorem / Christian Kirchner -- Foreign direct investment in agriculture : land grab or food security improvement? / Christian Häberli.