The BBC's on-air editors answer more questions challenging our world. In this programme: Is America finished as the world's superpower? Has immigration gone too far in Britain? Is Russia now a rogue state? And has something gone seriously wrong with football? Presented from Washington by BBC world affairs editor John Simpson.

In this programme, John Simpson is in Baghdad and asks: Does Iraq have a future? The BBC's Economics Editor, Stephanie Flanders, examines whether London is bad for Britain. Home Editor, Mark Easton, wonders: whatever happened to the teenage rebel.