Former tennis champion Andre Agassi tells Stephen Sackur why he's going back to school.
BBC World Service Online
After all the turmoil in the Catholic Church, how much authority can the Pope command?
Is Israel at risk of isolation as a result of its government's policies?
When it comes to improving the lives of the world's poorest people, what really works?
Stephen Sackur talks to Safa Hussein, acting Iraqi National Security Adviser