George Friedman's book The Next 100 Years covers primarily the political, economic and military conflicts that he predicts will occur from now until the year 2100.
Far from heading into the twilight he sees America's ascendancy during the next century primarily based on geography. One of three large countries with sea ports on the Atlantic and the Pacific gives the US a big advantage with respect to shipping material goods. The dominance of the US Navy also allows for unfettered control of trade on the ocean.
Conflict between Mexico and the US over the boarder region between the two countries is predicted to escalate. Because the Mexican community in the US is not a diaspora he argues that the loyalty of Mexican/American citizens is in question at least in the boarder regions.
The mastery of space and the development of space based energy production and space based weaponry will also be a large source of conflict and prosperity in the latter half of the 21st century.
He predicts that Russia will attempt to reestablish some of the USSR first through dependency on energy production. Poland will again be caught in the middle with the US and UK needing to make a decision if the country is worth defending.
George Friedman - America's strength: destroy the old and let it go.
Turkey will dominate the Islamic world in the future
The book, The Next 100 Years: A Forecast for the 21st Century, is available from Amazon.com.