Abu Hamza, the militant, London-based Muslim cleric, maintained close contact with the leadership of al-Qa'eda during the years when it operated a worldwide terrorist network from Afghanistan, according to FBI files. Documents obtained by The Daily Telegraph state that Hamza, the former imam of Finsbury Park mosque, north London, dealt personally with Abu Zubeidah, Osama bin Laden's director of operations. Zubeidah, a Palestinian who is now in US custody, communicated bin Laden's instructions and messages from his hideout in Afghanistan to al-Qa'eda cells around the world. Hamza had the power to refer recruits to Zubeidah for "leadership training" in Afghan...