NEW DELHI: Oil prices jumped on Monday to their highest since January as the US’s weekend move to join Israel in attacking Iran’s nuclear facilities stoked supply concerns.

Both contracts rose by more than 3 percent earlier in the session to $81.40 and $78.40, respectively, touching five-month highs before giving up some gains.

By 12:21 p.m. Saudi time, Brent crude futures were up 5 cents or 0.06 percent to $77.06 a barrel, while US West Texas Intermediate crude advanced 0.02 cents or 0.03 percent to $73.86.

The rise in prices came after US President Donald Trump said he had “obliterated” Iran’s 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.

Iran is OPEC’s third-largest crude producer.

Market participants expect further price gains amid mounting fears that an Iranian retaliation may include a closure of the Strait of Hormuz, through which roughly a fifth of global crude supply flows.

“The current geopolitical escalation provides the fundamental catalyst for (Brent) prices to traverse higher and potentially spiral toward $100, with $120 per barrel appearing increasingly plausible,” said Sugandha Sachdeva, founder of New Delhi-based research firm SS WealthStreet.

Iran said on Monday that the US attack on its nuclear sites expanded the range of legitimate targets for its armed forces and called Trump a “gambler” for joining Israel’s military campaign against the Islamic Republic.

“The risks of damage to oil infrastructure ... have multiplied,” said Sparta Commodities senior analyst June Goh.

Although there are alternative pipeline routes out of the region, there will still be crude volume that cannot be fully exported out if the Strait of Hormuz becomes inaccessible. Shippers will increasingly stay out of the region, she added.

Goldman Sachs said in a Sunday report that Brent could briefly peak at $110 per barrel if oil flows through the critical waterway were halved for a month, and remain down by 10 percent for the following 11 months.

The bank still assumed no significant disruption to oil and natural gas supply, adding global incentives to try and prevent a sustained and very large disruption.

Brent has risen 13 percent since the conflict began on June 13, while WTI has gained around 10 percent.

Given the Strait of Hormuz is indispensable for Iran’s own oil exports, which are a vital source of its national revenues, a sustained closure would inflict severe economic damage on Iran itself, making it a double-edged sword, Sachdeva added.

Meanwhile, Japan on Monday called for de-escalation of the conflict in Iran, while a South Korean vice industry minister voiced concern over the potential impact of the strikes on the country’s trade.

Russian President Vladimir Putin will meet Iranian Foreign Minister Abbas Araqchi in Moscow on Monday, Russian Interfax agency said, citing Kremlin aide Yuri Ushakov.

RIYADH: Saudi Arabia’s Tadawul All Share Index edged lower on Sunday, falling 36.44 points, or 0.34 percent, to close at 10,574.27.

Total trading turnover reached SR3.72 billion ($991 million), with 134 stocks posting gains and 102 declining.

The Kingdom’s parallel market, Nomu, also recorded a slight dip, losing 27.14 points, or 0.10 percent, to settle at 26,148.69, as 34 stocks advanced and 39 retreated. Meanwhile, the MSCI Tadawul 30 Index dropped 5.34 points, or 0.39 percent, to finish at 1,361.80.

Alistithmar AREIC Diversified REIT Fund was the best-performing stock of the session, with its share price rising 10 percent to SR8.25. Al Sagr Cooperative Insurance Co. followed with a 9.96 percent increase to SR12.36, while Knowledge Economic City climbed 5.36 percent to close at SR12.98.

On the losing side, Retal Urban Development Co. saw the steepest decline, falling 5.10 percent to SR13.02. Flynas Co. dropped 4.13 percent to SR74.20, and Saudi Chemical Co. declined 3.85 percent to SR6.24.

Shares of Hawiya Identity Auctions began trading on Nomu at SR13 per share. According to a Tadawul statement, the offering comprised 2.4 million shares, with Derayah Financial Co. acting as lead manager.

Gas Arabian Services Co. announced the signing of a joint venture agreement with Italy’s BONOMI Co. to establish a valve manufacturing company in the Kingdom.

The new company will have a capital of SR5 million, with BONOMI holding a 60 percent stake and Gas Arabian Services owning 40 percent.

The Saudi firm will fund its SR2 million share from internal resources. The deal is expected to have a long-term positive financial impact, though it remains subject to regulatory approvals and the fulfillment of conditions outlined in the agreement. Gas Arabian Services shares closed at SR15, up 0.40 percent.

The price range for the offering of the Sports Clubs Co. ranged between SR7 and SR7.5 per share, according to a statement by Saudi Fransi Capital, the financial advisor and bookrunner for the institutional subscription.

The offering includes 34.32 million ordinary shares, representing 30 percent of the company’s capital.