Book excerpt: The 1990s have been labeled the ‘Sanctions Decade’, since they witnessed an unprecedented intensification of the use of collective non-military enforcement measures, and in particular sanctions, by the post-Cold War reactivated Security Council. This Research Handbook studies the current practice of UN sanctions in international law, their interrelationship with other regimes and substantive areas of law, as well as issues arising from their implementation and application at the domestic level.