Introduction; 1. Secondary sanctions in the international legal order Cedric Ryngaert, Tom Ruys and Felipe Rodriguez Silvestre; Part I. Secondary Sanctions - Setting the Stage: 2. 'Secondary sanctions' - what's in a name? Charlotte Beaucillon; 3. The economic effect of secondary sanctions on firms: theory and (scarce) evidence Christopher Hartwell; 4. The impact of unilateral (especially US secondary) sanctions: how do international financial institutions and their compliance officers cope? Martin Vogt; 5. The EU and the politics of secondary sanctions Clara Portela; Part II. Secondary Sanctions and General Public International Law: 6. Secondary sanctions, access restrictions and customary international law Patrick Terry; 7. The correlation theory: a new tool in currency-based jurisdiction Susan Emmenegger and Florence von Mutzenbecher; 8. Challenging secondary sanctions in US courts: reflections on the halkbank case William S. Dodge; 9. Secondary sanctions and the principle of non-intervention Felipe Rodríguez Silvestre; 10. Secondary sanctions, state responsibility and grave breaches of jus cogens norms Stefano Silingardi; Part III. Secondary Sanctions and International Economic Law: 11. Secondary economic sanctions - what role for the world trade organization? Peter-Tobias Stoll; 12. Secondary sanctions under international investment law Pierre-Emmanuel Dupont; 13. The enforcement of extraterritorial sanctions: asset freezes and international monetary law Annamaria Viterbo; 14. Secondary sanctions under general and security exceptions Geraldo Vidigal and Celia Challet; Part IV. Secondary Sanctions in Commercial Practices and Domestic Litigation: 15. Secondary sanctions and force majeure clauses: the perspective of financial institutions Roger Kaiser and Eduard Hovsepyan; 16. The impact of extraterritorial and secondary sanctions on contractual obligations Mercédeh Azeredo da Silveira and Cedric Ryngaert; Part V. The Future of Secondary Sanctions: 17. Secondary sanctions - the Chinese perspective Congyan Cai; 18. Secondary sanctions, the informal economy, and the cryptocurrency disruption Lauren E. Brown; 19. Secondary sanctions after Russia's invasion of Ukraine - a whole new world? Tom Ruys and Felipe Rodriguez Silvestre.