Satisfied powers are those that have reached the top of the pecking order, are happy with their lot, and are primarily interested in preserving the status quo. In contrast, rising powers are states on the move. They are not satisfied with their lot, are usually struggling for recognition and influence, and are therefore looking for ways to overturn the status quo. In general terms, satisfied states extend commitments abroad when they must, not when they can. They are motivated by necessity rather than opportunity. Rising states extend commitments abroad when they can, not when they must. They are motivated by opportunity rather than necessity.
Chapter six: "The Limits of American Internationalism—Looking Ahead" - The End of the American Era (2002)