12 February 1979
The State Security Council (SSC) approves guidelines for the conducting of military operations against liberation movements in foreign countries. The Departments of Foreign Affairs, Defence and Police draw up the memorandum, which contains provision for: Planned operations, Cross-border raids ("hot pursuit"), Reconnaissance actions; and clandestine operations. With respect to reconnaissance and clandestine operations, the document admits that such actions would be difficult to justify in terms of international law.
References

SAHO, Umkhonto weSizwe in exile, from South African History Online, [online], Available at www.sahistory.org.za [Accessed: 28 January 2014]