HARDtalk

The Top US General in Afghanistan is being replaced and the Obama administration is promising a new strategy to confront the Taliban in both Afghanistan and Pakistan. But what works when it comes to fighting the militants? David Kilcullen is an Australian soldier and anthropologist who, for the last four years, has been a key adviser to the Pentagon on counter-insurgency strategy. Is the US fighting wars it can never win? David Kilcullen talks to Stephen Sackur.