United Nations Security Council resolution 583, adopted unanimously on 18 April 1986, 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 three months until 19 July 1986.

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).

• Israeli–Lebanese conflict
• Lebanese Civil War
• List of United Nations Security Council Resolutions 501 to 600 (1982–1987)
• South Lebanon conflict (1985–2000)

• Text of the Resolution at undocs.org

• Works related to United Nations Security Council Resolution 583 at Wikisource