Media playback is unsupported on your device

Why should you care about currency wars?

9 November 2010 Last updated at 14:54 GMT

As global economies struggle to emerge from the worldwide credit crunch, the pressure is on countries to make their currencies as competitive as possible.

The BBC's economics editor Stephanie Flanders explains the background to the so-called 'currency wars', one of the big issues to be addressed at the G20 summit in Seoul.