Operation Joint Endeavour (IFOR - 20 Dec. 1995 - 20 Dec. 1996) This part of the website provides an archive of information relating to NATO's role in bringing peace to the former Yugoslavia (NATO Basic Fact Sheet) under the NATO-led Implementation Force (IFOR - Operation Joint Endeavour - 20 Dec. 1995 - 20 Dec. 1996) in Bosnia and Herzegovina (NATO Basic Fact Sheet) Documents For in depth ...