HARDtalk - Lord Guthrie

Has Britain's loyalty to the United States since 9/11 served or hindered Britain's own national security interests? British forces have been stretched by deployments in Afghanistan and Iraq and there have been allegations of British complicity in abuses of human rights. As President Obama redefines American interests, should Britain be doing the same? Lord Guthrie, the head of the British armed forces from 1997 until 2001, talks to Stephen Sackur.