United Nations Security Council resolution 599, adopted unanimously on 31 July 1987, after recalling previous resolutions on the topic, as well as studying the report by the Secretary-General on the United Nations Interim Force in Lebanon (UNIFIL) approved in 426 (1978), the Council decided to extend the mandate of UNIFIL for a further six months until 31 January 1988.
The Council then reemphasised the mandate of the Force and requested the Secretary-General to report back on the progress made with regard to the implementation of resolutions 425 (1978) and 426 (1978).
See also
Israeli–Lebanese conflict
Lebanese Civil War
List of United Nations Security Council Resolutions 501 to 600 (1982–1987) South Lebanon conflict (1985–2000)