Oil prices touched a five-month high before paring gains on Monday as oil and gas transit continued on tankers from the Middle East after US airstrikes against Iran at the weekend.
Brent crude futures were up 85 cents, or 1.1, at77.86 a barrel by 1126 GMT.
US West Texas Intermediate crude rose by 84 cents, or 1.14, to 74.68.
US President Donald Trump said he had obliterated Irans main nuclear sites in strikes over the weekend, joining an Israeli assault in an escalation of conflict in the Middle East as Tehran vowed to defend itself.
Israel carried out fresh strikes against Iran on Monday including on capital Tehran and the Iranian nuclear facility at Fordow, which was also a target of the US attack.
