LONDON—Oil slipped on Thursday as investors took profits after a recent price rally, but strong demand and short-term supply disruptions continue to support prices close to their highest since 2014. Brent crude futures were down 39 cents, or 0.4 percent, at $88.05 a barrel by 1006 GMT after dropping more than $1 in earlier trade. The global benchmark rose to $89.17 on Wednesday, its highest since October 2014. U.S. West Texas Intermediate (WTI) crude futures for February delivery were down 29 cents, or 0.3 percent, at $86.67 a barrel after dropping nearly $1 earlier. The contract, which expires on Thursday, climbed to $87.91 on Wednesday. The more active March WTI contract was down 15 cents, or 0.1 percent, at $85.65 a barrel. “The voices of those forecasting $100 per barrel oil are getting louder by the day,” said Tamas Varga at oil brokerage PVM. Supply concerns have mounted this week …