Global Business & Emerging Markets

Dispute centers on the ECB's role in the rescue plan.

Sarkozy and Merkel try to narrow differences ahead of EU summit.

But asset sales may be difficult in current markets, which could limit shrinkage.

ECB rules out ramping up its bond-buying program.

Resolving crisis will take well into next year, Merkels spokesman says.

Global finance chiefs warn that debt crisis endangers world economy.