I just read Thomas Friedman's "Iraq Through China's Lens" in today's New York Times. He points out that in a major speech Wen Jiabao, the prime minister, talked about economic progress made and economic, political, and environment challenges to be faced. On the other hand, Friedman wrote, the U.S. is focused on the war in Iraq.
It's time for many to reread Paul Kennedy's The Rise and Fall of the Great Powers: Economic Change and Military Conflict From 1500 to 2000.
Kennedy's thesis is that the great powers rise and fall relative to each other, even if a power's economy and military is growing, others may be growing faster. Considering how fast China and India are growing relative to the U.S., the U.S. is squandering much of its resources in Iraq and will "fall" further behind China and India.
See also my articles Is the Asian Century coming? and More on a Possible Asian Century.