lˈuːkəz dˈænjəl bˈɑːɹnɑːɹd bˈɔːɹn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi nˈaɪn, nˈoʊn æz nˈɪɛl bˈɑːɹnɑːɹd, ɪz ɐ fˈɔːɹmɚ hˈɛd ʌv sˈaʊθ ˈæfɹɪkəz nˈæʃənəl ɪntˈɛlɪdʒəns sˈɜːvɪs ænd wʌz nˈoʊɾəbəl fɔːɹ hɪz bᵻhˌaɪndðəsˈiːnz ɹˈoʊl ɪn pɹɪpˈɛɹɪŋ fˈɔːɹmɚ pɹˈɛzɪdənt nˈɛlsən mændˈɛlə ænd fˈɔːɹmɚ sˈaʊθ ˈæfɹɪkən pɹˈɛzɪdənts pˈiː.dˈʌbəljˌuː. bˈoʊθə ænd ˈɛf. dˈʌbəljˌuː. də klˈɜːk fɔːɹ mændˈɛləz ᵻvˈɛntʃuːəl ænd, æz hiː sˈɔː ɪt, ɪnˈɛvᵻɾəbəl, ɹᵻlˈiːs fɹʌm pɹˈɪzən ænd ɹˈaɪz tə pəlˈɪɾɪkəl pˈaʊɚ.
Lukas Daniel Barnard (born 1949), known as Niël Barnard, is a former head of South Africa's National Intelligence Service and was notable for his behind-the-scenes role in preparing former president Nelson Mandela and former South African presidents P.W. Botha and F. W. de Klerk for Mandela's eventual and, as he saw it, inevitable, release from prison and rise to political power.