book chapters

‘Global Legal Pluralism’, in J.L. Dunoff & M.A. Pollack, eds., International Legal Theory: Foundations and Frontiers, Cambridge University Press, 2022, 240-258 Full text

‘Framing Entangled Legalities Beyond the State’, in N. Krisch, ed., Entangled Legalities Beyond the State, Cambridge University Press (2021), 1-32 Full text

‘Entgrenzte Jurisdiktion: Die extraterritoriale Durchsetzung von Unternehmensverantwortung’ (Jurisdiction Unbound: Extraterritoriality and Corporate Responsibility), in Deutsche Gesellschaft für internationales Recht, ed., Unternehmensverantwortung im internationalen Recht (2020), 11-38

Pluralism in International Law and Beyond’, in J. d’Aspremont & S. Singh, eds., Fundamental Concepts for International Law: The Construction of a Discipline, Edward Elgar, 2019, 691-707   SSRN

‘The Many Fields of (German) International Law’, in A. Roberts, P. Stephan, P.-H. Verdier & M. Versteeg (eds.), Comparative International Law (Oxford: Oxford University Press, 2018), 91-109   Full text   SSRN

‘Authority, Solid and Liquid, in the Postnational Sphere’, in M. del Mar & R. Cotterrell, eds., Transnational Legal Authority (Edward Elgar, 2016), 25-48   Full text   SSRN

‘Capacity and Constraint: Governance through International and Transnational Law’, in M Lodge & K Wegrich (eds), The Problem-Solving Capacity of the Modern State: Governance Challenges and Administrative Capacities, Oxford: Oxford University Press, 2014, 198-217   More information   SSRN

‘Chapter VII Powers: The General Framework’, ‘Articles 39 to 43’, in B. Simma, G. Nolte, D.-E. Khan & A. Paulus (eds), The United Nations Charter: A Commentary, Oxford: Oxford University Press, 3rd ed., 2012, 1237-1356   More information

A previous version, co-authored with Jochen Abr. Frowein, appeared as ‘Introduction to Chapter VII’, ‘Articles 39-43’, ‘Article 2(5)’, in B. Simma (ed), The Charter of the United Nations: A Commentary, 2nd ed., Oxford: Oxford University Press, 2002, 701-763, 136-139

‘The Case for Pluralism in Postnational Law’, in G. de Burca & J.H.H. Weiler (eds.), The Worlds of European Constitutionalism, Cambridge: Cambridge University Press, 2012, 203-261   More information  SSRN 

‘Global Administrative Law and the Constitutional Ambition’, in M. Loughlin & P. Dobner (eds), The Twilight of Constitutionalism?, Oxford: Oxford University Press, 2010, 245-266   More information  SSRN

‘The Security Council and the Great Powers’, in V. Lowe et al (eds), The United Nations Security Council and War, Oxford: Oxford University Press, 2008, 133-153   More information   SSRN

‘Die Vielheit der europäischen Verfassung’ (The Multiplicity of the European Constitution), in Die Europäische Verfassung – Verfassungen in Europa (K. Groh et al., eds., 2005), Baden-Baden: Nomos-Verlag, 61-90   SSRN

‘The Rise and Fall of Collective Security: Terrorism, US Hegemony, and the Plight of the Security Council’, in Terrorism as a Challenge for National and International Law: Security vs. Liberty? (C. Walter, S. Vöneky, V. Röben and F. Schorkopf, eds., 2004), Berlin, Heidelberg: Springer, 2004, 879-908  More information   SSRN

‘National Implementation of United Nations Sanctions in Germany’, in V. Gowlland-Debbas (ed), National Implementation of United Nations Sanctions: A Comparative Study, Leiden, Boston: Martinus Nijhoff, 2004, 233-264 (with J.A. Frowein)   More information   SSRN

‘More Equal Than the Rest? Hierarchy, Equality and U.S. Predomi­nance in International Law’, in M. Byers and G. Nolte (eds), United States Hegemony and the Foundations of International Law, Cambridge: Cambridge University Press, 2003, 135-175   More information

‘Weak as Constraint, Strong as Tool: The Place of International Law in U.S. Foreign Policy’, in D. Malone and Y.F. Khong (eds), Unilateralism and U.S. Foreign Policy, Boulder, London: Lynne Rienner Publishers, 2002, 41-70   More information

‘Europol und die Garantien der EMRK’ (Europol and the European Convention on Human Rights), in S. Gleß, R. Grote, G. Heine (eds),  Justitielle Einbindung und Kontrolle von Europol, Freiburg: Max Planck Institute for Foreign and International Criminal Law, 2001, vol. 2, pp. 7-98 (with R. Bank)

‘Die Bedeutung der EMRK für den Einsatz von Verdeckten Ermitt­lern und V-Personen’ (The impact of the European Convention on Human Rights on the use of undercover agents), in C. Geisler (ed), Verdeckte Ermittler und V-Personen im Strafverfahren, Wiesbaden, 2001, 61-76 (with R. Bank)