Geithner on sensitive mission to China

Timothy Geithner's first trip to China as Treasury Secretary comes at a vulnerable time for the Obama Administration.
Mired in a brutal recession, the United States needs Beijing to buy more American goods, let China's currency rise and make other moves to narrow an enormous trade gap.

The US also needs China's help to confront any military threat from North Korea.
Yet Washington's leverage has waned just as China's power over the US has grown.
China is now America's biggest creditor. As of March, it held US$768 billion of Treasury securities - about 10 per cent of publicly traded debt.