The Iran nuclear program's Arak heavy water reactor. Photo: Nanking2012/Wikimedia Commons.

BBC – Few people believe Iran and the six world powers it is negotiating with will be able to reach an agreement by the 24 November deadline to resolve the crisis over Tehran’s nuclear ambitions.

But if they do – and that is a big “if” – one of the most dangerous crises in the Middle East may finally be defused.

Read full story.