considered Mandela's ANC a terrorist organisation sympathetic to communism and supported its suppression. Pollsmoor Prison: 1982–1988 In April 1982, Mandela was transferred to Pollsmoor Prison in Tokai, Cape Town, along with senior ANC leaders Walter Sisulu, Andrew Mlangeni, Ahmed Kathrada and Raymond Mhlaba; they believed that they were being isolated to remove their influence on younger activists at Robben Island. Conditions at Pollsmoor were better than at Robben Island, although Mandela missed the camaraderie and scenery of the island. Getting on well with Pollsmoor's commanding officer, Brigadier Munro, Mandela was permitted to create a roof garden; he also read voraciously and corresponded widely, now being permitted 52 letters a year. He was appointed patron of the multi-racial United Democratic Front (UDF), founded to combat reforms implemented by South African president P. W. Botha. Botha's National Party government had permitted Coloured and Indian citizens to vote for their own parliaments, which had control over education, health and housing, but black Africans were excluded from the system. Like Mandela, the UDF saw this as an attempt to divide the anti-apartheid movement on racial lines. The early 1980s witnessed an escalation of violence across the country, and many predicted civil war. This was accompanied by economic stagnation as various multinational banks—under pressure from an international lobby—had stopped investing in South Africa. Numerous banks and Thatcher asked Botha to release Mandela—then at the height of his international fame—to defuse the volatile situation. Although considering Mandela a dangerous "arch-Marxist", Botha offered him, in February 1985, a release from prison if he "unconditionally rejected violence as a political weapon". Mandela spurned the offer, releasing a statement through his daughter Zindzi stating, "What freedom am I being offered while the organisation of the people [ANC] remains banned? Only free men can negotiate. A prisoner cannot enter into contracts." In 1985, Mandela underwent surgery on an enlarged prostate gland before being given new solitary quarters on the ground floor. He was met by "seven eminent persons", an international delegation sent to negotiate a settlement, but Botha's government refused to co-operate, calling a state of emergency in June and initiating a police crackdown on unrest. The anti-apartheid resistance fought back, with the ANC committing 231 attacks in 1986 and 235 in 1987. The violence escalated as the government used the army and police to combat the resistance and provided covert support for vigilante groups and the Zulu nationalist movement