global leadership? much of the US agricultural industry is heavily subsidized see big sugar for instance.. Americans pay 3x what the rest of the world pays for sugar..

Developing nations wanting to export agricultural products face high tariffs and other barriers in the US (as well as Europe)..

Chinas has pegged its currency below the US dollar and has monetary export controls that helped China avoid the Asian meltdown 10 years ago..
Whereas other countries such as Thailand and South Korea suffered huge devaluations in currency thanks to rampant currency trading when the Asian bubble burst.

China's been around for several thousand years longer than the US and
and in the end will do what it wants.

The US under Clinton thought opening up trade with China will open up the 1billion + market to the US but it ended up the other way around.

iTs also laughable that the US would accuse China of currency speculation.. ONe of the ways the BUsh administration has handled its overspending is to let the US dollar fall to about half of what it was worth when Bush started. ITs the way the empire taxes the rest of the world. Especially when the Currency of oil trade is the US greenback, and nations that purchase oil need to keep large amounts of US currency..

Goldman Sachs predicts the Chinese economy will overtake the US in 20years. and in the end economics trumps all.
The irony is that the current #1 superpower cannot even make the steel for its battleships.