P. W. Botha

Context: In superficial ways, Botha's application of the apartheid system was less repressive than that of his predecessors. He legalised interracial marriage and miscegenation, both completely banned since the late 1940s. The constitutional prohibition on multiracial political parties was lifted. He also relaxed the Group Areas Act, which barred non-whites from living in certain areas. In 1988, a new law created "Open Group Areas" or racially mixed neighborhoods. But these neighborhoods had to receive a Government permit, and had to have the support of the local Whites immediately concerned, and had to be a high class neighborhood in the major cities typically in order to receive the permit. In 1983, the above constitutional reforms granted limited political rights to Coloureds and Indians. Botha also became the first South African government leader to authorise contacts with Nelson Mandela, the imprisoned leader of the African National Congress. However, in the face of rising discontent and violence, Botha refused to cede political power to blacks and imposed greater security measures against anti-apartheid activists. Botha also refused to negotiate with the ANC.  In 1985, Botha delivered the Rubicon speech which was a policy address in which he refused to give in to demands by the black population, including the release of Mandela. Botha's defiance of international opinion further isolated South Africa, leading to economic sanctions and a rapid decline in the value of the rand. The following year, when the US introduced the Comprehensive Anti-Apartheid Act, Botha declared a nationwide state of emergency. He is famously quoted during this time as saying, "This uprising will bring out the beast in us".  As economic and diplomatic actions against South Africa increased, civil unrest spread amongst the black population, supported by the ANC and neighbouring black-majority governments. On 16 May 1986, Botha publicly warned neighbouring states against engaging in "unsolicited interference" in South Africa's affairs. Four days later, Botha ordered air strikes against selected targets in Lusaka, Harare, and Gaborone, including the offices of exiled ANC activists. Botha charged that these raids were just a "first installment" and showed that "South Africa has the capacity and the will to break the [African National Congress]."  In spite of the concessions made by Botha, the apartheid years under his leadership were by far the most brutal. Thousands were detained without trial during Botha's presidency, while others were tortured and killed. The Truth and Reconciliation Commission found Botha responsible for gross violations of human rights. He was also found to have directly authorised 'unlawful activity which included killing.' However, Botha refused to apologise for apartheid. In a 2006 interview to mark his 90th birthday, he suggested that he had no regrets about the way he had run the country. He denied, however, that he had ever considered black South Africans to be in any way inferior to whites, but conceded that "some" whites did hold that view. He also claimed that the apartheid policies were inherited from the British colonial administration in the Cape and Natal Province, implying that he considered them something he and his government had followed by default. CANNOTANSWER

Question: How many years was Botha active in fighting segregation?
Answer: CANNOTANSWER