RoydadNaft –  Brent crude futures rose 20 cents, or 0.22%, to $91.07 a barrel. U.S. West Texas Intermediate (WTI) crude futures climbed 49 cents, or 0.58%, to $84.99 a barrel.

Oil prices traded slightly higher for a third consecutive session on Tuesday as prospects of a deal to end the Middle East war faded. Iran said it would adopt a more offensive stance, while the United States ruled out extending a ceasefire agreement, heightening concerns over prolonged disruptions to energy supplies.

At 1203 GMT, Brent crude futures were up 20 cents, or 0.22%, at $91.07 a barrel. U.S. West Texas Intermediate crude futures were up 49 cents, or 0.58%, at $84.99 a barrel.

Both Brent and WTI futures earlier in the session hit their highest levels since July 30 and July 31, respectively.

“Sentiment remained supported by U.S. President Donald Trump’s decision not to extend the U.S.-Iran peace agreement and by ongoing security concerns in the Strait of Hormuz,” ING analysts wrote in a note.

Outward progress on peace talks and the resumption of oil tanker traffic through the strategic Strait of Hormuz has stalled, threatening to prolong the conflict that the United States and Israel launched with attacks on Iran on February 28.

Iran will keep the Strait of Hormuz closed until the United States meets the conditions of the interim deal signed in June, top Iranian negotiator Mohammad Baqer Qalibaf said in comments published by state media on Tuesday. Trump had previously described that deal as “over.”

Qalibaf’s remarks came after a senior Iranian official told Reuters on Monday that Iran would shift to a “fully offensive” military posture as efforts toward a permanent end to the war had stalled.

“The lack of any kind of deal will have an impact on oil price expectations further out in the fourth quarter and even in 2027,” said Suvro Sarkar, head of energy research at DBS Bank.

Some oil is still getting through Hormuz, though the number of crossings remains in the single digits. Saudi Aramco has resumed oil loadings from inside the Strait of Hormuz and is offering cargoes for loading via ship-to-ship transfers off Fujairah in the UAE.

“It is probably within Iran’s power to fully halt the flow of oil out of the Strait of Hormuz whenever they find it suitable,” said SEB analyst Bjarne Schieldrop.

Separately, Iran has been negotiating with Oman on an agreement to manage the Strait of Hormuz and says the two sides are close to a deal. Trump responded to those talks with a threat to bomb Oman, a longstanding U.S. security partner.

Elsewhere in the Middle East, Yemen’s Houthis launched missiles in an attack on vessels they described as a Saudi military ship and four escorts in the Red Sea, according to their military spokesperson Yahya Saree, who made the statement on the Telegram messaging app.