The Secretary-General Kofi Annan was asked to consider a reduction of the military observers to as low as 22 in light of the improved conditions.[2] He was also requested to report to the Council on the situation by 15 April 1999 concerning progress towards a peaceful solution of the dispute between Croatia and Serbia and Montenegro. Finally, the Stabilisation Force, authorised in Resolution 1088 (1996) and extended by Resolution 1174 (1998), was required to co-operate with UNMOP.