The twelfth special session of the United Nations Environment Programme (UNEP) Governing Council/Global Ministerial Environment Forum was held in Nairobi from 20 to 22 February 2012. It was convened in pursuance of section I of Governing Council decision 26/17 and paragraph 5 of General Assembly resolution 40/243 on the pattern of conferences, and in accordance with rules 5 and 6 of the rules of procedure of the Governing Council.