The Lawfulness of Military Assistance to the Republic of Viet-Nam

Abstract

The major thrust of contemporary international law is to restrict coercion in international relations as a modality of major change. The use of force as an instrument of change has always been wasteful, disruptive, and tragic. In the nuclear era the renunciation of force as a method of settlement of disputes has become an imperative. These necessities have resulted in a widely accepted distinction between lawful and unlawful uses of force in international relations which is embodied in the United Nations Charter. Force pursuant to the right of individual or collective defense or expressly authorized by the centralized peacekeeping machinery of the United Nations is lawful. Essentially all other major uses of force in international relations are unlawful. These fundamental proscriptions are designed to protect self-determination of the peoples of the world and to achieve at least minimum world public order. As such, they reflect the basic expectations of the international community. Since they are aimed at prohibiting the unilateral use of force as a modality of major change, they have consistently authorized the use of force in individual or collective defense at least “until the Security Council has taken the measures necessary to maintain international peace and security.” This defensive right is, at least at the present level of effectiveness of international peacekeeping machinery, necessary to the prevention of unilateral use of force as an instrument of change. The fundamental distinction between unlawful unilateral force to achieve major change and lawful force in individual or collective defense against such coercion is the structural steel for assessment of the lawfulness of the present military assistance to the Republic of Viet-Nam.