The essays and commentaries in this collection were presented at a Con ference on Problems of International Law in the Western Hemisphere, the Second Conference on Problems of Regional International Law under the joint sponsorship of the American Society of International Law and the Graduate Faculty of the New School for Social Research, April 2 & 3, 1971. Contributors have been given the opportunity to revise their papers since their original presentation. The editors acknowledge with gratitude the important contributions made by the Chairmen of the respective panels, namely, Professor Louis...