Afghanistan's new Top Guns and America's dilemma over sending more US troops to the region. Kate Adie introduces correspondents' stories.

Justin Rowlatt meets one of a new generation of Afghan fighter pilots and asks whether they can become an effective fighting force without additional support from their US allies.

Chris Haslam is in Rwanda ahead of the presidential election, but he doesn't need to wait for the vote itself to reveal who the winner is.

Antonia Quirke finds that Mexico's long-running drug war is spreading its violence to previously peaceful parts of the country.

David Shukman visits Greenland's melting ice sheet and struggles to avoid its treacherous puddles of slushy snow.

And fridge magnets and foreign policy: has Steve Rosenberg found a new way to decipher Russia's approach to global politics?

Producer: Joe Kent.