Borders and International Law: Setting the Stage.- Part I.- Within the Border.- Access to Social Security for Migrants in the European Union: Sedentarist Biases Between Citizenship, Residence and Claims for a Post-national Society.- Non-refoulement in the Eyes of the Strasbourg and Luxembourg Courts: What Room for Its Absoluteness?.- The Pillars of Heracles of European Private International Law: The Frontiers with Third States and Brexit.- The Principle of Territoriality in EU Data Protection Law.- Part II.- Beyond the Border.- Testing the Analogy: The CoE-ECHR System Pioneering Human Rights Protection in the Cyberspace.- The Sky's Not the Limit: Legal Bonds and Boundaries in Claiming Sovereignty over Celestial Bodies.- A Bull in a China Shop: The Exercise of the ICC's Jurisdiction Over Its Territorial Reach in Situations Involving Non-Party States.- At the Frontier: Values and Borders in the EU's External Relations.