According to controversial author Gerald Posner, ex-CIA officials claim that General Akhtar Abdur Rahman, Pakistani ISI’s head from 1980 to 1987, regularly meets bin Laden in Peshawar, Pakistan. The ISI and bin Laden form a partnership that forces Afghan tribal warlords to pay a “tax” on the opium trade. By 1985, bin Laden and the ISI are splitting annual profits of up to $100 million a year. [Posner, 2003, pp. 29]