Journal of Conflict and Security Law Advance Access originally published online on November 17, 2006
Journal of Conflict and Security Law 2006 11(3):343-359; doi:10.1093/jcsl/krl021
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The Expanding Law of Self-Defence
* Professor of International Law, LUISS University Law School, Rome, Italy. E-mail: nronzitti{at}luiss.it
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Since the entry into force of the UN Charter, self-defence has become the preferred excuse for States to justify their use of force, for use of force is in principle banned not only by the Charter but also by modern constitutions. The author examines how States are stretching the notion of this permissible use of force to justify their armed actions in foreign territory. Although it is still the object of controversy between continental and overseas lawyers, a consensus seems to be emerging on the lawfulness of anticipatory self-defence, provided that it is given a narrow interpretation. On the contrary, pre-emption has not gained currency within the international community. Another emerging consensus is related to the origin of an armed attack, which may come not only from States but also from non-State entities to trigger the right of self-defence. The author suggests that a declaratory GA resolution, such as the ones on Friendly Relations and on the Definition of Aggression, could clarify the subject. However, his conclusion is pessimistic, because States prefer to leave the boundaries of self-defence undefined to retain their freedom of action.