1977: Canadian-Based Pakistani Begins Working with A. Q. Khan

Pakistani nuclear scientist A. Q. Khan writes to fellow Pakistani scientist Abdul Aziz Khan and asks him to return to Pakistan to help with its nuclear weapons program, a “project of national importance.” Abdul Aziz Khan declines, but agrees to collect technical information in North America to help the program, and to travel to Pakistan during his vacations to help train scientists there. Abdul Aziz Khan will later go on to play a key role in a scheme to send US-made equipment used in centrifuges to Pakistan via Canada. [Armstrong and Trento, 2007, pp. 67]