A leading economist said in Seoul yesterday that the U.S. dollar's supremacy as the world's reserve currency is facing profound challenges as the balance of economic and financial power shifts East amid the current economic crisis. "There is a slow-burning fuse underneath the dollar," Gerard Lyons, chief economist at Standard Chartered Bank, said in the World Economic Forum. Underscoring the strengthening role of Asia, Lyons said that the depth of the global downturn drove key emerging economies, such as China and Russia, to cite the possibility of a new global reserve currency. The forum drew a group of leading figures...