Winnie Mandela: Tributes paid to "Mother of the Nation"

South African Cyril Ramaphosa and Nobel Laureate Desmond Tutu are among those who have paid tribute to Winnie Madikizela-Mandela, who has died, aged 81.

The anti-apartheid campaigner, and former wife of South Africa's first black president, Nelson Mandela, was known by many as the "Mother of the Nation".

Energy Minister Jeff Radebe described her as a "colossus who strode the political landscape".