Great powers are most frequently broken by war or internal fragmentation. In the case of Britain, the World Wars of the 20th Century delivered blows to its economy and society that were staggering. The wars also produce new powers, the United States and Soviet Union both emerged from the wars towering over Britain. The Soviet Union in turn was shattered by internal fragmentation. Its institutions ceased functioning, shattering the regime and society. For the United States the threat of a war that exhausts American society opening the door for a greater power is the first threat. Over the long run, regional disintegration is the second threat. The United States is a vast country and stresses that are not visible at the moment can arise. One of the reasons I argue for American power in the 21st century is that I don't see the forces that will generate this very quickly. It will take a long time to get there.
________________________________
An interesting perspective. I think Friedman could be right. I had a close look at USA debt levels etc. Although things look daunting, things can be salvaged if Americans save more and spend less on Chinese imports. The 14 trillion dollar debt could be paid off inside 20 years, if the government increases taxes. It requires political will to do it.



