United Nations Security Council resolution 1580, adopted unanimously on 22 December 2004, after reaffirming resolutions 1216 (1998) and 1233 (1999) on the situation in Guinea-Bissau, the Council extended the mandate of the United Nations Peacebuilding Support Office in Guinea-Bissau (UNOGBIS) for a further period of one year and revised its operations.[1] It was the final Security Council resolution adopted in 2004.