24–27 June: The 1997 Brussels Conference (The Brussels International Conference for a Comprehensive Ban on Anti-Personnel Landmines) It provided a clear selection process for the forthcoming diplomatic conference in Oslo: It identified the Third Austrian Draft formally as the basis for its negotiations, agreed that a two-third majority was necessary for any substantive changes of this Draft, limited the voting right to States having adhered to the Brussels Declaration and allowed the ICBL to participate as a full observer, despite concerns from a number of States.