NATO's air operation against Yugoslavia, undertaken with a view to helping the Kosovo Albanians resist genocide and ethnic cleansing, confronted the international community with a bitter dilemma. In Europe, the choice either to tolerate massive violations of human rights or to infringe the principle of non-use of force, given the absence of explicit authorization by the Security Council, was a challenge never before encountered since the new world order was ushered in by the Charter of the United Nations. This book, a collection of legal essays which emerged from a meeting of members of the...