Brent crude fell below $57 a barrel on Friday as a strengthening dollar weighed on commodity markets after profit-taking by Asian investors earlier in the session. Asian investors were also mulling the impact from a tentative deal that would end a strike by U.S. refinery workers. Oil prices on Friday were initially supported by the U.S. dollar .DXY, which posted its biggest one-day fall in a month on Thursday, as it retreated from a 12-year high against a basket of major currencies on an unexpected fall in U.S. retail sales. But the greenback rallied to send Brent falling below $57 a barrel towards the end of the Asian trading day. A stronger greenback makes commodities denominated in the dollar more expensive for holders of other currencies and limits their purchases of commodities and other assets. Brent for April delivery LCOc1 was trading down 25 cents at […]