Obama: No national security harm from Petraeus (00:53)
US President Barack Obama says he has no evidence that the scandal that ended David Petraeus' career had a negative impact on national security. 15/11/12
US President Barack Obama says he has no evidence that the scandal that ended David Petraeus' career had a negative impact on national security. 15/11/12
Tax cut hangover 06:28
Carbon compo's downside 02:06