I. Introduction
II. Cyberwarfare and the Morality of Going to War (Jus ad bellum)
III. The Varieties of Cyberharm and Cyberattack
IV. Special attributes of Cyberwarfare and Proposed Jus ad cyber-bellum Criteria
V. Cyberharm and International Law
VI. Tolerable Peaceful Levels of Cyberwarfare: Rules for Cyber Cold War
VII. Conclusion