United Nations Security Council Resolution 1696, demanding Iran halts its enrichment programme, 31 July 2006 (Wikisource) United Nations Security Council Resolution 1737, imposing initial sanctions, 23 December 2006 (Wikisource) United Nations Security Council Resolution 1803, requiring Iran to halt enrichment-related activities, 3 March 2008 United Nations Security Council Resolution 1835, reaffirming previous resolutions, 27 September 2008 United Nations Security Council Resolution 1929, imposing sanctions and enforcement measures, 9 June 2010 United Nations Security Council Resolution 2231, endorsing the Joint Comprehensive Plan of Action, 20 July 2015