People & Power - Guantanamo forever

Two days after his inauguration in January 2009, Barack Obama, the US president, signed an executive order promising to close the US military prison in Guantanamo Bay, Cuba within one year. But the deadline was missed, and efforts to close the facility have failed so far, undone by Congress, legal dilemmas and domestic politics. Bob Abeshouse investigates why Guantanamo remains open, and the obstacles to closing it any time soon.