Former Belgian Prime Minister Mark Eyskens says what's needed is something similar to the 1944 Bretton Woods Conference that created rules and institutions to rebuild the economic system after World War II.

NPR: In Europe, Excesses Blamed For Money Meltdown

The meeting might also seek to redesign those Bretton Woods institutions - but it is unclear what role the new institutions would undertake.

BBC: Q&A: The G20 summit