Iran fired on commercial ships Wednesday and targeted Dubai International Airport, escalating a campaign of bottling up the oil-rich Persian Gulf as global energy concerns mounted and American and Israeli airstrikes pounded the Islamic Republic.

Iran’s response to the surprise Israeli and U.S. bombardment that started 12 days ago has upended trade routes, choked supplies of fuel and fertilizer coming out of the Gulf and threatened air traffic through one of the world’s most-traveled regions. Both sides have dug in, hoping to outlast the other.

Report: New supreme leader injured

An Israeli intelligence assessment, meanwhile, found Iran’s new supreme leader, Ayatollah Mojtaba Khamenei, was wounded at the start of the war — on the day when his father and predecessor, Ayatollah Ali Khamenei, was killed in an Israeli airstrike.

An Israeli intelligence official and a reservist with knowledge of the assessment spoke on condition of anonymity because they were not authorized to discuss the matter with the media. They gave no details on the nature of the injuries.

The 56-year-old, whose wife was also killed in the Israeli strike, has not been seen since becoming supreme leader on Monday. Yousef Pezeshkian, the son of Iranian President Masoud Pezeshkian, wrote on social media that he had heard Mojtaba was wounded but that friends said “he is healthy and there is no problem.”

Strikes across the Persian Gulf

In Tehran late Wednesday, witnesses said they heard loud airstrikes, explosions and heavy fire by anti-aircraft batteries. They could also hear the buzzing of drones overhead. A person driving to Tehran described overcast skies as smoke from bomb and missile blasts mingled in the air that smelled of burnt powder and gasoline. They spoke on condition of anonymity for fear of reprisal.

The fallout across the Middle East widened as Israel struck what it said were targets connected to Iran-backed Hezbollah militants in Lebanon. The U.N. refugee agency said at least 759,000 people have been internally displaced in Lebanon, while more than 92,000 others have crossed into neighboring Syria.

Elsewhere, two Iranian drones hit near the Dubai airport, home to the long-haul carrier Emirates and the world’s busiest for international travel. Four people were wounded but flights continued, the Dubai Media Office said.

At Oman’s Port of Salalah, firefighters battled a blaze Wednesday at fuel storage tanks after days of Iranian attacks, according to the Oman News Agency.

U.N. weighs in

The U.N. Security Council voted Wednesday to approve a resolution demanding a halt to Iran’s “egregious attacks” on its Gulf neighbors.

“The international community is resolute in rejecting these Iranian attacks against sovereign countries that are threatening the stability of the peoples, especially in a region of strategic importance to global economy, energy, security, and security of global trade,” said Bahrain’s U.N. ambassador, Jamal Alrowaiei.

The 13-0 vote in the U.N.’s most powerful body reflects Iran’s isolated position as it has aggressively responded to Israeli and U.S. strikes. China and Russia — two Iranian allies — abstained from the vote.

Their U.N. ambassadors called the proposal “extremely unbalanced” in not mentioning the strikes against Tehran that began the war.

Russia’s U.N. ambassador, Vassily Nebenzia, said it might leave the impression that Iran, “on its own volition and out of malice, conducted an unprovoked attack on Arab states.” Iranian U.N. Ambassador Amir Saeid Iravani said the resolution “deliberately ignores the root causes of the current crisis.”

Iran has effectively stopped cargo traffic through the narrow Strait of Hormuz, through which a fifth of all traded oil passes.

At least 12 incidents involving vessels around the strait have been confirmed since fighting began, according to two global trackers, and at least seven mariners have been killed.

Iran said to be still exporting oil

The United States has pledged to keep the strait open and has led intense airstrikes targeting Iran’s navy and the port city of Bandar Abbas. The U.S. military said Tuesday it destroyed 16 Iranian minelayers near the strait.

Some tankers, believed linked to Iran, continue to get through the strait, making so-called “dark” transits — meaning they aren’t turning on trackers that show where they are. Vessels carrying sanctioned Iranian crude often turn off their trackers.

The commodity-tracking firm Kpler said Iran has restarted crude exports through its Jask oil terminal on the Gulf of Oman. A tanker loaded roughly 2 million barrels at Jask on March 7, it said.

Energy agency agrees to release some oil reserves

Oil prices remained well below Monday’s peaks but the price of Brent crude, the international standard, was still up some 20% Wednesday from when the war began. Consumers around the world are already feeling the pain at the pump.

While visiting Ohio on Wednesday, U.S. President Donald Trump told Cincinnati television station WKRC that he will tap the U.S. Strategic Petroleum Reserve to try to curtail rising gas prices. He didn’t specify how many barrels of oil the U.S. would release.