Paul Craig Roberts, former Secretary Treasury under Reagan, offers a critical take on the U.S. as declining empire.
I think his points about the US reliance on force over diplomacy abroad and at home are particularly noteble.
I expect to see more use of force as the US's economic power deteriorates further.
I read today that Japan's new leadership is questioning the use of its ports for US nuclear armed ships. (WSJ 10/23/09 p. 15). I believe this illustrates the growing disillusionment with US military-style diplomacy in the world.