United Nations Security Council Resolution 1686, adopted unanimously on June 15, 2006, after recalling previous resolutions concerning Lebanon and the region, including 1373 (2001), 1566 (2004), 1595 (2005), 1636 (2005), 1644 (2005) and 1664 (2006), the Council extended the mandate of the United Nations International Independent Investigation Commission (UNIIIC) investigating the assassination of former Lebanese Prime Minister Rafik Hariri for one year.[1]