Abstract

http://ssrn.com/abstract=2047778
 


 



Self-Defense Against Terrorists: The Meaning of Armed Attack


Steven R. Ratner


University of Michigan Law School

September 2, 2011

The Leiden Policy Recommendations on Counter-Terrorism and International Law, Nico Schrijver and Larissa van den Herik eds., Cambridge University Press, 2012 Forthcoming
U of Michigan Public Law Research Paper No. 270

Abstract:     
The last decade has witnessed increased recourse by states to military force to respond to terrorist attacks on their soil that have originated from abroad. A number of states -- including the United States -- have justified these military actions as lawful self-defense in response to an armed attack, as permitted under Article 51 of the United Nations Charter. These claims raise multiple interpretive questions about the meaning of "armed attack" under Article 51 and of the various options that are allowed in response to one. This essay explores the contemporary understanding of an "armed attack" in terms of an attack's origins (i.e., can an attack under the Charter originate from nonstate actors?), scale (i.e., must such attacks meet a threshold of intensity to trigger lawful self-defense?), and military nature. It also focuses on the the permissibility of attributing an attack by nonstate actors to a particular state, as well as the consequences of such an attribution. It then identifies a number of outstanding areas of disagreement in the law as well as practical issues for states contemplating the use of force in response to terrorist attacks. The essay concludes with a series of recommendations for resolving these disagreements in a way that respects the imperative of avoiding an escalation in force while deterring such attacks.

Number of Pages in PDF File: 21

Keywords: terrorism, international law, use of force, United Nations Charter

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Date posted: April 30, 2012 ; Last revised: July 12, 2012

Suggested Citation

Ratner, Steven R., Self-Defense Against Terrorists: The Meaning of Armed Attack (September 2, 2011). The Leiden Policy Recommendations on Counter-Terrorism and International Law, Nico Schrijver and Larissa van den Herik eds., Cambridge University Press, 2012 Forthcoming; U of Michigan Public Law Research Paper No. 270. Available at SSRN: http://ssrn.com/abstract=2047778 or http://dx.doi.org/10.2139/ssrn.2047778

Contact Information

Steven R. Ratner (Contact Author)
University of Michigan Law School ( email )
625 South State Street
Ann Arbor, MI 48109-1215
United States
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