WASHINGTON (AP) - The federal panel reviewing the Sept. 11 attacks met with former President Clinton in a private session Thursday that commissioners described as frank and informative. The 10-member panel interviewed Clinton for nearly four hours to discuss what his administration could have done to prevent the attacks. The former president was "forthcoming and responsive," said the commission. The panel said it didn't plan to release specific details of the meeting, saying much of it involved classified information. Commissioners said Clinton addressed "big-picture" policy issues, including his administration's response to the October 2000 al-Qaida attack on the USS Cole....