The Myth of The Decline Of The US

From The New Republic, "Not Fade Away: Against the myth of American decline." by Robert Kagan:

Did the fundamentals of America’s relative power shift so dramatically in just a few short years?

The answer is no. Let’s start with the basic indicators. In economic terms, and even despite the current years of recession and slow growth, America’s position in the world has not changed. Its share of the world’s GDP has held remarkably steady, not only over the past decade but over the past four decades. In 1969, the United States produced roughly a quarter of the world’s economic output. Today it still produces roughly a quarter, and it remains not only the largest but also the richest economy in the world. People are rightly mesmerized by the rise of China, India, and other Asian nations whose share of the global economy has been climbing steadily, but this has so far come almost entirely at the expense of Europe and Japan, which have had a declining share of the global economy.

Optimists about China’s development predict that it will overtake the United States as the largest economy in the world sometime in the next two decades. This could mean that the United States will face an increasing challenge to its economic position in the future. But the sheer size of an economy is not by itself a good measure of overall power within the international system. If it were, then early nineteenth-century China, with what was then the world’s largest economy, would have been the predominant power instead of the prostrate victim of smaller European nations. Even if China does reach this pinnacle again—and Chinese leaders face significant obstacles to sustaining the country’s growth indefinitely—it will still remain far behind both the United States and Europe in terms of per capita GDP.