Pakistan’s president Muhammad Zia ul-Haq is killed in an airplane crash. The plane went into a steep dive, then recovered regaining altitude. Then it dove a second time and crashed. [Yousaf and Adkin, 1992, pp. 91-92] ISI Director Akhtar Abdur Rahman, US ambassador to Pakistan Arnold Raphel, and other Pakistani and US officials are also killed. A joint US-Pakistani investigation fails to definitively explain what caused the crash. [Coll, 2004, pp. 178-179] According to Mohammad Yousaf, the ISI’s Afghan Bureau chief, the crash was due to sabotage. Yousaf does not know who was responsible, but later says that the US State Department was instrumental in the cover-up. Yousaf points out several reasons why the State Department might want to cover up the crime even if the US were not involved in the assassination itself. [Yousaf and Adkin, 1992, pp. 91-92] Richard Clarke, a State Department analyst who later will become counterterrorism “tsar” for Presidents Clinton and Bush Jr., believes that Zia’s death and the destruction of a major weapons stockpile used by the CIA and ISI around the same time (see April 10, 1988) were both ordered by the Soviets as revenge for being defeated in Afgnanistan. Clarke says, “I could never find the evidence to prove that the Soviet KGB had ordered these two acts as payback for their bitter defeat, but in my bones I knew they had.” [Clarke, 2004, pp. 50]