"Compare the relative weight of the US and Chinese economies as if they were two competitors on opposite ends of a seesaw. The conclusion is as obvious as it is painful. Americans have been debating whether they should put less weight on their left foot (the Middle East) in order to put more weight on their right (Asia). Meanwhile, China has just kept growing — at three times the US rate. As a result, America’s side of the seesaw has tilted to the point that soon both feet will be dangling entirely off the ground."
Graham Allison, Destined for War: Can America and China Escape Thucydides's Trap?