Is America's role as the world's "superpower" really on the decline?<br /><br />The dramatic economic growth of China, Latin America and India among others has some predicting a total shift in the balance of global power in the coming years. Meanwhile, the people's revolutions across the Middle East have undermined the assumption that military power will always win.<br /><br />On Wednesday's Riz Khan we ask: How are global power relations being redefined in the 21st century?<br /><br />We speak with the internationally renowned professor, Joseph Nye, who famously coined the term "soft power" on his latest book The Future of Power.<br /><br />You can watch the show at 1930 GMT on Al Jazeera English. Repeats will air next day at 0430 GMT, 0830 GMT and 1430 GMT.