*NATO (North Atlantic Treaty Organization): Oldest Alliance of the US, having little to no actual authority since the Second Cold War
*APESC (Asia-Pacific Economic and Security Council): Established at the end of WWIII the organization permitted Japan to maintain a limited sphere of influence in the Pacific while acknowledgement Chinese sovereignty and American Naval supremacy.
*AFTA (American Free Trade Association): Established during the Second Cold War from NAFTA, while allowing some US military presence in every member state.
*Visigrad Group (The Polish Bloc): Established just prior to the Second Cold War, the Polish Bloc is the most powerful entity in Europe, rivaled only by the Turks.
*EMC (Eastern Mediterranean Conference): Established at the End of WWIII the EMC limits the Turkish sphere of influence and allows them to continue to be a stabilizing force in the Middle East and North Africa, but is also intended to balance the Poles in the Balkans.
*APGS (Alliance of Persian Gulf States): Established shortly after the collapse of the Saudi Kingdom, this economic and security organization formalized Persian dominance in South-West Asia, and was intended to balance the Turks and the Indians.
Following the end of the Third World War, the United States ascended to be the unquestioned hegemony of the world. After years of tripping over their own weight the Americans have finally begun to understand how to run a responsible Empire; carving the world's great powers into several sphere's of influence, balancing one off of the other.
The US Government has issued a number of reforms over the years to better handle its position of geopolitical dominance, while the Republican Experiment has been preserved via a series of new Amendments to the Constitution. America now spends less on defense than at any other time in the last 100 years, but it still exceeds the budgets of every other great power. The Battlestar network has been expanded and upgraded to administer a planet wide network of hypersonic UAVs, spy satellites, a largely unmanned NAVY, and a small, but lethal force of power-armor equipped special forces units and UGVs.
Domestically the 2060s are a time of economic prosperity greater than any time in US History. At 420 million people, and spared the demographic problems of Eurasia thanks to an aggressive immigration policy, the United States's economy outshines that of the next five largest economies combined.
The technology developed during the War, has given the country, and the world, more opportunities for prosperity and leisure than ever before; but they have also forced a new social movement. Genetic Engineering, robotics, and information technology have all advanced to a point to where their affect on society is forcing every major religious group to reconcile with a planet that no longer functions under the old dogmas. Marriage is virtually non-existent in the Developed World, and birth-rates are beginning to level off even in the US, which had long since been an outlier.
The end of the war forced the borders of the former Russian Federation to solidify, and ended the formal occupation of much of the Russian Heartland by the Visigrad Group. The Iranians and Turks have brought stability to the Middle East, shifting it to a largely service based economy now that oil has been replaced entirely by America's vast network of space-based Solar Arrays. East Asia has finally normalized, and China has finally broken its cycle of rapid rise and collapse to become a modern Economy. NATO remains, but is little more than an informal American vassal, while the Polish Bloc (Visigrad Group) bestrides Europe like a Giant. The Americans now have absolute unity in the Western Hemisphere, but to their southern border an old and long forgotten enemy is beginning to rise...
**This scenario was conceived by STRATFOR founder, and geopolitical/economic analyst George Friedman. I did my best to illustrate his very interesting scenario which you can read about in great detail in his books: "The Next 100 Years," and the "Next Decade"