The dollar’s role as the primary reserve currency for the global economy allows the United States to borrow money more easily and impose painful financial sanctions. Other countries are beginning to …

As Europe has weathered a succession of economic crises, the European Central Bank has responded with an aggressive set of monetary policies that have redefined the bank’s original mandate.

Western leaders have long criticized OPEC’s power to raise oil prices, and the bloc continues to influence the global market even as U.S. oil production has soared and alternative energies have come …