HIV/AIDS denialism in South Africa according to Gellman, Mbeki is "keeping the scientific uncertainties alive because he doesn't want to portray himself as helpless." On May 10, 1994, Mandela became President of South Africa, remaining in that office until replaced by Thabo Mbeki five years later. During his presidency, which lasted from then until 1999, Mandela remained largely indifferent to HIV/AIDS, and did not speak out about the danger it posed to South Africa until the early 2000s. Mandela has himself reportedly expressed regret that he did not do more to combat AIDS during his presidency. In early 1997, Mbeki, who was then the Deputy
Botswana–South Africa relations President Ronald Reagan. In 1986, President Quett Masire of Botswana said that South Africa's black neighbours would suffer most if Western countries imposed economic sanctions on South Africa. He said "Obviously we can't prohibit the West from imposing sanctions on South Africa and we welcome every form of pressure on the apartheid regime." Relations between South Africa and Botswana were formalised with the establishment of representative offices in both countries in 1992. The upgrading of relations to full diplomatic level came into force on 22 June 1994. The two countries enjoyed good relations during the presidencies of Thabo Mbeki and