Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: So idealistic was Graham Turnbull that he decided to give up his comfortable life as a solicitor in Lincolnshire and go to teach in Africa. After farewells to his parents and family, the then 33-year-old headed for Rwanda, a former Belgian colony, where he dreamed of helping people escape poverty through education. But Graham’s dream immediately ran into problems: he was held up on the border with Uganda, prevented from travelling any further, while inside Rwanda the worst genocide since the Holocaust was underway. More than a million died in a three-month orgy of violence as the majority Hutu tribe wiped out members of the Tutsi tribe — who, despite being the minority in the country, had been the traditional rulers.General Karenzi Karake's extradition case dismissed on legal loopholeKarake and mentor Paul Kagame accused of orchestrating massacresTony Blair's wife Cherie was hired to represent Karake after his arrest 
 Question:But this ‘visionary’, in cahoots with his arrested spy chief _, has since been accused of involvement in the massacre of tens of thousands of their ethnic rivals in a series of brutal reprisal killings.

Karenzi Karake