Oil prices gained over $1 on Wednesday as escalating Middle East tensions fueled fears of supply disruptions, while falling US crude and product inventories lent support to the market.
Brent crude futures rose $1.59, or 1.5%, to $110.38 per barrel as of 0350 GMT. US West Texas Intermediate (WTI) crude gained $1.36, or 1.4%, to $99.18 per barrel.
Prices fell in the previous trading session after Iran's president discussed mediation efforts in a meeting with Pakistan's army chief in Tehran, though Brent hit a five-month high before easing.
"Oil prices have been having a bit of wild ride in the last couple of sessions," said Suvro Sarkar, head of energy research at DBS.
"We believe this is a mix of profit taking and optimistic hopes of a Qatar- or Pakistan-brokered deal, countered by the realization that any deal is still very distant and compounded further by inventory data from the American Petroleum Institute (API), which shows drawdowns continuing in the US for both crude and products."
Iran told Pakistan's army chief there would be no talks with Washington until its demands were met, Iranian media outlet Nournews reported on Tuesday, adding that a Qatari delegation had arrived in Tehran. There was no official confirmation of the reports.
Maritime security risks are also escalating. Shiptracker Kpler said on Monday that at least 18 vessel attacks were recorded over the past two weeks, while LSEG analysts warned Iran was targeting tankers well beyond the Strait of Hormuz, reaching into the Gulf of Oman and jeopardizing Gulf crude loadings and the ship-to-ship transfers supporting regional loadings.
The death toll from a Houthi attack on Yemeni government forces on Monday rose to 73 as fighting intensified.
In the US, two Energy Department officials said on Tuesday they were working with refiners around the world to boost fuel output as a diesel shortage has raised prices.
According to market sources citing API data, US crude stocks fell by 4.9 million barrels in the week ended October 16.
