Charles Stirnweiss, the mayor of Forbach, argues that with the flush of German reunification fading, more German investors seeking lower costs are coming to Lorraine, seeing it almost as a single cross-frontier region with the Saarland.

ECONOMIST: France

Refugee camps close to the frontier became favourite targets for cross-border raids by Sierra Leonean rebels, attacking rival rebel groups, seeking supplies and hostages, and forcing the able-bodied to join their ranks.

ECONOMIST: Guinea

The programme follows the Ponseti treatment - both in Africa and Britain - and tells the story of Steve's struggle to overcome deep-set traditions and practices to eventually cross a new medical frontier.

BBC: Superdoctors - one small step