Brent crude oil futures fell, today, as Donald Trump's surprise victory in the U.S. presidential election sent markets into turmoil reminiscent of June's Brexit vote. Brent lost 47 cents, to 45.57 dollars a barrel, having earlier lost almost 4 percent, to 44.40 dollars a barrel. U.S. crude fell 50 cents, to 44.48 dollars a barrel. The U.S. dollar fell sharply against a basket of other leading currencies.