NEW YORK (Reuters) -- Oil prices on Tuesday climbed to their highest since 2014 as possible supply disruption after attacks in the Mideast Gulf added to an already tight supply outlook. Brent crude futures rose 77 cents, or 0.9%, to $87.25 a barrel at 11:05 a.m. EST (1605 GMT). U.S. West Texas Intermediate (WTI) crude futures rose $1.25, or 1.5%, to $85.07 a barrel. Trade on Monday was subdued because of a U.S. public holiday. During the session, both benchmarks touched their highest since October 2014 with Brent at $88.13 and WTI at $85.74.