A potential superpower is a sovereign state or other polity that is speculated to be or have the potential to become a superpower; a sovereign state or supranational union that holds a dominant position characterized by the ability to exert influence and project power on a global scale through economic, military, technological, political, and/or cultural means.[1][2][3]
After the United States, which, following the collapse of the Soviet Union, is currently considered to be the world's foremost[4] and sole widely undisputed[5]—and by some accounts only[6][7][8]—superpower, only China, the European Union, India, and Russia have consistently been academically discussed as potential superpowers of the 21st century, with Japan having been a former candidate in the 1980s.
The United States is the sole world's superpower.