When Prime Minister Stephen Harper sits down with his G20 counterparts in Pittsburgh Friday, the world leaders are expected to agree on a few broad objectives to avoid another fiscal crisis sinking the global economy.
"We are not going to walk away from the greatest economic crisis since the Great Depression and leave unchanged," said U.S. Treasury Secretary Tim Geithner Thursday. Police used pepper gas to disperse a protest by 2,000 people not far from the cordoned-off centre where the talks were taking place.