Saudi Arabia is the world’s largest source of funds for Islamist militant groups such as the Afghan Taliban and Lashkar-e-Taiba – but the Saudi government is reluctant to stem the flow of money, according to Hillary Clinton.

“More needs to be done since Saudi Arabia remains a critical financial support base for al-Qaida, the Taliban, LeT and other terrorist groups,” says a secret December 2009 paper signed by the US secretary of state. Her memo urged US diplomats to redouble their efforts to stop Gulf money reaching extremists in Pakistan and Afghanistan.

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