Introduction: Global Internet Policy: a Fifteen-Year Long Debate -- Part 1. Actors, Institutions and Principles of Internet Governance -- Chapter 1 Global Internet Governance: Governance without Governors -- Chapter 2 Competing Institutional Trajectories for Global Regulation—Internet in a Fragmented World -- Chapter 3 Internet Freedom and the Constitutionalization of Internet Governance -- Part 2. Multistakeholderism and its Limits -- Chapter 4 Internet Governance: The Last Gasp of Colonialism, or Imperialism by Other Means? -- Chapter 5 Visions of Political Power: Treaty Making and Multistakeholder Understanding -- Chapter 6 Use [and Abuse] of Multistakeholderism in the Internet -- Part 3. Internet Security between Competition and Cooperation -- Chapter 7 Chinese Internet Governance—Some Domestic and Foreign Issues -- Chapter 8 Extending Cybersecurity, Securing Private Internet Infrastructure: the US Einstein Program and its Implications for Internet Governance -- Chapter 9 Open Security. Contributions of Networked Approaches to the Challenge of Democratic Internet Security Governance -- Conclusions and Way Forward. From Nested Dilemmas to Democratic Internet Governance.