SriLanka, Oct. 20 -- Oil prices fell on Tuesday as markets weighed an executive order from US President Donald Trump that waived some sanctions and tariffs tied to Russian energy exports, while attacks on Saudi Arabia and Yemen kept fears of Middle East supply disruptions in view.

Brent crude futures fell 49 cents, or 0.45 per cent, to $109.06 a barrel by 0010 GMT. The US West Texas Intermediate crude (WTI) contract for November delivery, set to expire on Tuesday, eased 0.33 per cent to $103.32. The more-active December contract was down 46 cents, or 0.47 per cent, at $98.08.

Brent rose as high as $110.70 per barrel in the previous session, its highest since May 20.

An executive order issued by Trump on Friday night waived key Russia-r...