Also, South Africa did play a significant role during the waning days of White Rhodesian rule, and it wasn't solely in the form of military support. IIRC, much of the pressure that Smith faced stemmed from S. Africa's political game, and Johannesburg saw the writing on the wall. Rather than have a violent overthrow of the Rhodesian govt., it saw accomodation as a means to an end, and expended considerable effort driving the point home that a transitional government, followed by majority rule was in Rhodesia's best interest. In fact, many argue they were looking to cover their own rear ends.