U.S. President Barack Obama said Wednesday that he was optimistic about the prospects for success at the G-20 summit, while urging other countries to take aggressive stimulus actions to revive their economies.

"We've got two goals in the G20," Obama said during a meeting at the White House with Treasury Secretary Timothy Geithner.

"The first is to make sure that there is concerted action around the globe to jump-start the economy. The second goal is to make sure that we are moving forward on a regulatory reform agenda," he noted.

"I am actually optimistic about the prospects -- everybody understands, we are in this together," Obama said, adding the G20 need to work together to see how they can make sure emerging and developing nations "remain stable."

Source:Xinhua