BBC correspondents assess impact of G20 summit

The G20 summit has ended in Seoul with a collective commitment to avoid "competitive devaluation" of currencies and to come up with guidelines to tackle trade imbalances.

However deep differences remain, particularly between China and the United States, over trade.

So how much common ground is there between the world's biggest industrialised and emerging nations?

Three BBC correspondents; Martin Patience in Beijing, Stephen Evans in Berlin and Paulo Cabral in Sao Paulo, give their assessments.