The papers in the present Review are based on lectures given during the seventh University of Eastern Finland – UNEP Course on International Environmental Law-making and Diplomacy, which was held from 15 to 27 August 2010 at the Joensuu campus of the University of Eastern Finland. Previous courses have been held in Joensuu (2004, 2005, 2007), in South Africa (2006, 2008), and at the UNEP headquarters in Kenya (2009).