United Nations Security Council Resolution 639

United Nations Security Council resolution 639, adopted unanimously on 31 July 1989, 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 1990.

UN Security Council Resolution 639
UNIFIL area of operations
Date	31 July 1989
Meeting no.	2,873
Code	S/RES/639 (Document)
Subject	Israel–Lebanon
Voting summary	15 voted for None voted against None abstained
Result	Adopted
Security Council composition
Permanent members	China  France  United Kingdom  United States  Soviet Union
Non-permanent members	Algeria  Brazil  Canada  Colombia  Ethiopia  Finland  Malaysia    Nepal  Senegal  Yugoslavia

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).