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4 Chi. J. Int'l L. 59 (2003)
Hard Law, Soft Law, and Non-Law in Multilateral Arms Control: Some Compliance Hypotheses

handle is hein.journals/cjil4 and id is 65 raw text is: Hard Law, Soft Law, and Non-Law in Multilateral Arms
Control: Some Compliance Hypotheses
Richard L. Williamson, Jr.*
I. INTRODUCTION
Perhaps the single most important issue concerning the role of law in arms
control' is whether parties are more likely to comply2 with the fundamental
Professor of Law, University of Miami School of Law, and Interim Chair, Department of
International Studies. JD, Harvard Law School. The author wishes to thank the University of
Miami for its financial support, Dapo Akande, Mary Coombs, Bernard Oxman, David Sloss,
and Leonard Spector for their helpful comments, and his research assistants Jeffrey Green
and Andrea Sasse. The author previously spent two years in the State Department working
on European disarmament matters, and six years in the Arms Control and Disarmament
Agency working on nuclear nonproliferation.
No effort is made here to distinguish arms control from disarmament, though distinctions
are possible. More significant is to differentiate arms control from two related subjects, viz.,
from peace treaties and cease-fire agreements containing provisions for demilitarized zones
or other arms limitations, and from humanitarian law. The former includes the Rush-Bagot
Agreement of 1817 between the US and Britain that restricted the number and weaponry of
warships on the Great Lakes and Lake Champlain; the 1955 Multilateral Austrian State
Treaty, 6 UST 2369 (1955); the 1990 Treaty on the Final Settlement With Respect to
Germany, 1696 UNTS 115 (1991); and the Egyptian-Israeli Peace Treaty, reprinted in 18
ILM 362 (1979). These agreements are similar to arms control in that they limit the number,
armament, and/or location of military forces. But nations often have incentives to comply
with peace agreements that differ considerably from the kinds of incentives that may apply to
instruments more widely considered arms control. Humanitarian law (jus in bello, generally
considered a subset of the laws of war) limits the means and circumstances under which arms
can be used, with the clear implication that other uses are proper. Humanitarian law, as its
name implies, is largely designed to protect the civilian population and avoid needless
suffering among combatants. It forbids the use of some arms entirely or controls the
circumstances of their use. Arms control, in contrast, goes beyond use limitations to prohibit
manufacturing, testing, transfer, and/or possession of weapons systems, or to constrain their
number and location. Its purposes are above all to contribute to international peace by
reducing nations' concerns over the number, type, and placement of weapons-particularly
those thought to be of strategic significance or otherwise destabilizing-in the hands of
other countries. This distinction leaves some gray areas, such as the ban on any use of
chemical or biological weapons under the Protocol for the Prohibition of the Use in War of
Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare, 26
UST 571 (1975) (hereinafter Geneva Protocol); the ban on the use of environmental
modification techniques under the Convention on the Prohibition of Military or Any Other

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