United Nations Security Council resolution 1186, adopted unanimously on 21 July 1998, after recalling resolutions 1105 (1997) and 1110 (1997), the Council extended and strengthened the mandate of the United Nations Preventive Deployment Force (UNPREDEP) in Macedonia until 28 February 1999.
The resolution noted that the UNPREDEP mission played an important role in maintaining peace and stability in Macedonia, and recalled resolutions concerning the situation in Albania, including 1101 (1997) and 1114 (1997). It also recalled Resolution 1160 (1998) which imposed an arms embargo on the Federal Republic of Yugoslavia (Serbia and Montenegro) including Kosovo. The UNPREDEP peacekeeping mission also monitored the border to prevent the spread of conflict and illegal arms flows.