The Centre for International Sustainable Development Law (CISDL) is based in the McGill University Faculty of Law (founded in Montreal, Canada, in 1849). Its mission is to promote sustainable societies and the protection of ecosystems by advancing the understanding, development and implementation of international sustainable development law. CISDL works in cooperation with the McGill School of the Environment, the Université de Montreal Faculty of Law, and the Université de Québec à Montreal. It has guidance from the three Montreal-based multilateral environmental accords (the NAFTA Commission for Environmental Cooperation, the UNEP Biodiversity Convention, and the Montreal Protocol multilateral fund). It is the leader of a ‘Type II’ Outcome from the World Summit for Sustainable Development, in partnership with the International Law Association and the International Development Law Institute, to build knowledge, analysis and capacity on international law for sustainable development.