Crude-oil prices plummeted in Asian trade Friday as U.K. voters upended market expectations by choosing to exit the European Union, leaving a trail of unknowns of what could happen to the economic future of the region. The unexpected result of the so-called Brexit vote mounted strong pressure on the British pound, sending the greenback soaring as investors seek refuge in safe haven assets. Oil prices fell to nearly 7% at one point in the session. On the New York Mercantile Exchange, light, sweet crude futures for delivery in August traded at $47.42 a barrel at 0600 GMT, down $2.69 or 5.3% in the Globex electronic session. August Brent crude on London’s ICE Futures exchange fell $2.74 or 5.2% to $48.17 a barrel. According to The Wall Street Journal Dollar Index, the greenback was last […]