West Texas Intermediate dropped for a fourth day, slipping below $100 a barrel, as the dollar headed for its biggest monthly gain against the euro since last February, curbing the appeal of the commodity. Brent decreased in London. Futures fell as much as 1.2 percent in New York to the lowest since July 15. A stronger U.S. currency often dims the appeal of using dollar-priced commodities such as crude for protecting against inflation. WTI also fell after data yesterday showed U.S. gasoline supplies rose to the highest level in four months. The U.S. is considering further punitive measures on Russian business to deter President Vladimir Putin’s support for separatists in east Ukraine. “The U.S. dollar is starting to push higher, that weighs on commodity prices including oil,” Jens Pedersen, an analyst at Bank A/S in Copenhagen, said by e-mail. “Sanctions on Russia have not had an effect on current […]