It was a period of trial and error, just as our predecessors in the 1950s and 1960s conceived and developed UN peacekeeping by trial and error."7 UN peacekeeping forces had received the most notable accolade in the world in 1988. ###>Pour leur part, les États en déroute ou défaillants sèment les graines de la menace à l'échelle régionale et mondiale et provoquent des catastrophes humanitaires.