US president John F. Kennedy meets with Mobutu Sese Seko, the commander-in-chief of the Congolese armed forces that ousted and assassinated Patrice Lumumba, at the White House in 1963. (photo: Keystone/Getty Images)   From undermining national liberation leaders to playing a central role in the assassination of Congolese radical Patrice Lumumba, not enough attention is paid to the CIA’s shameful role in Africa. A new book aims to correct that.   In 1958, a year after it achieved independence from colonial rule, Ghana hosted a conference of African leaders, the first such gathering to ever take place on the continent. At the invitation of Ghana’s newly elected prime minister, Kwame Nkrumah, more than three hundred leaders from twenty-eight territories across Africa attended, including Patrice Lumumba of