Following a start in the red, oil prices again gained on Tuesday as markets assessed a US executive order easing some sanctions and tariffs linked to Russian energy exports, while fresh attacks in Saudi Arabia and Yemen kept concerns over Middle East supply disruptions alive.
Brent crude futures gained 21 cents, or 0.20, to $109.76 a barrel, while US West Texas Intermediate (WTI) crude futures for November delivery, which expire on Tuesday, rose 0.11% to $104 a barrel. Brent had climbed to $110.70 a barrel in the previous session, its highest level since May 20.