Submitted pursuant to para. 11 of Security Council resolution 1590 (2005); provides an update since the previous report dated 31 Dec. 2010 (S/2010/681), on the implementation of the Comprehensive Peace Agreement and the activities of the UN Mission in the Sudan (UNMIS) up to 1 Apr. 2011 as well as recommendations for the extension of UNMIS's mandate, which will expire on 30 Apr. 2011. Includes UN map no. 4249 Rev.17: UNMIS, February 2011 (Feb. 2011).