Brent crude oil prices fell on Tuesday, pulled down by a stronger dollar and a bout of profit-taking, while U.S. futures gained, bringing the discount between the two key futures contracts to a six-month low. Brent crude futures fell 73 cents from Monday’s close to $64.94 a barrel by 1017 GMT, while U.S. West Texas Intermediate (WTI) crude futures were up 20 cents from their last close on Friday at $61.88 a barrel. Reduced supply from Canada to the United States caused by pipeline reductions were supporting WTI, traders said. Brent is trading at a premium of less than $3 a barrel to WTI , down from over $$7 at the start of the year.