Insight. Analysis. Colour. In this edition, people in the German town of Montabaur try to come to terms with the fact that one of their neighbours, Andreas Lubitz, deliberately crashed an aircraft into the French Alps killing 149-people; two years of negotiations over Iran's nuclear programme reach a climax in Lausanne -- the implications, if there's agreement, could be far-reaching; the Royal Fleet Auxiliary ship Argus is on its way home from Sierra Leone -- its airmen and sailors have spent months helping in the fight against the deadly Ebola virus; have you tried organic kosher shazamazam? We're in LA trying to penetrate a sub-culture with a language of its own and in Africa, he's the man presidents, rebels and villagers alike all want to meet. But they'll find it harder to do so in the future. West Africa correspondent Mark Doyle is leaving the BBC.