WASHINGTON – A former Pakistani spy master with links to the Taliban claims that al-Qaeda has captured American prisoners in eastern Afghanistan, forcing U.S. troops to end the siege of their stronghold and withdraw. U.S. officials say the claim is false. Talking to United Press International from his home in Islamabad, Gen. Hamid Gul, the former chief of Pakistan's main spy agency, Inter Services Intelligence, said the United States sent "some Americans to Shahikot, dressed as Afghans." Shahikot is the mountainous region of eastern Afghanistan where U.S. forces and their Afghan allies taking part in Operation Anaconda have been bombing...