“Key Al Qaeda leaders have also visited the United States in recent years, including [Osama bin Laden’s brother-in-law] Muhammad Jamal Khalifa. When US immigration arrested him in San Francisco in December [16] 1994, a search of his luggage revealed, inter alia, documents setting out the ‘outline of the institution of jihad’ which includes ‘the Wisdom of Assassination and Kidnapping, the Wisdom of Assassinating Priests and Christians, the Wisdom of Bombing Christian Churches and Places of Worship, the Wisdom of Martyrdom Operations, the Wisdom of Reconciliation with the Enemy and other various methods.’ Also found were extensive discussions of assassination, the use of explosives, military training and jihad as well as details of Islamist movements such as Hamas and Palestinian Islamic Jihad.”
– Rohan Gunaratna, Inside al Qaeda, Page 114