Closing Guantanamo prison 'very difficult': Hagel

Pentagon chief Chuck Hagel said it is "going to be very difficult" to close the controversial US prison at Guantanamo Bay by the end of President Barack Obama's term in two years. In an interview with National Public Radio that aired Monday, Hagel also acknowledged that he had taken a cautious approach to approving the transfer of some detainees out of the prison, which had reportedly irritated some officials in the White House. Obama has repeatedly vowed to close the prison for t