SINGAPORE, May 18 (Reuters) - Oil prices extended gains on Monday as efforts to end the U.S.-Israeli war with Iran appeared to have stalled, after a nuclear power plant in the United Arab Emirates came under attack and as U.S. President Donald Trump is expected to discuss military options on Iran.

Brent crude futures climbed $1.36, or 1.24%, to $110.62 a barrel by 2202 GMT and U.S. West Texas Intermediate was at $107.26 a barrel, up $1.84, or 1.75%.

(Reporting by Florence Tan; Editing by Edmund Klamann)