United Nations Security Council resolution 558, adopted unanimously on 13 December 1984, after recalling resolutions 418 (1977) and 421 (1977) which imposed a compulsory arms embargo on South Africa and established a committee to monitor it, the council stressed the continuing need for all Member States and international organisations to observe the arms embargo.
The council also called for States and organisations not to receive South African made weapons and military vehicles, and requested the Secretary-General to report back on the implementation of the resolution by no later than 31 December 1985.