The United States, States and the False Claims of the End of the Global Internet / Sébastien-Yves Laurent -- Cybersecurity in America: The US National Security Apparatus and Cyber Conflict Management / Frédérick Gagnon, Alexis Rapin -- Separation of Offensive and Defensive Functions: The Originality of the French Cyberdefense Model Called into Question? / Alix Desforges -- The Boundary Between Cybercrime and Cyberwar: An Uncertain No-Man's Land / Marc Watin-Augouard -- Cyberdefense, the Digital Dimension of National Security / Bertrand Warusfel -- Omnipresence Without Omnipotence: The US Campaign Against Huawei in the 5G Era / Mark Corcoral -- Issue of Personal and Sovereign Data in the Light of an Emerging "International Law of Intelligence" / Fabien Lafouasse -- International Cybersecurity Cooperation / Guillaume Poupard -- Cyberdefense and Cybersecurity Regulations in the United States: From the Failure of the "Comprehensive Policy" to the Success of the Sectoral Approach / Adrien Manniez.