US Tanker Strikes Turn the Gulf Into a War Zone for Global Energy

The Tanker War Goes Wide

The United States destroyed five Iranian oil tankers in the Gulf of Oman and near Kharg Island on Tuesday, and Iran answered by launching ballistic missiles at a US base in Jordan. The exchange marks a shift from proxy skirmishes and port blockades to direct attacks on commercial shipping and allied territory — a jump that turns the Persian Gulf from a contested waterway into an active war zone for global energy.

Crude climbed to $99.49 a barrel in early Wednesday trading. That number sounds almost modest until you remember that Iran funneled roughly 90 percent of its pre-war oil exports through Kharg Island, and that Japan and South Korea together absorb more than half of all Iranian oil shipments heading to Asia. The price spike is not just a financial headline. It is a stress test for supply chains that were already bruised by six months of war.

How We Got Here

Tensions had been building since the US and Israel launched their campaign against Iran six months ago. Tehran responded by closing the Strait of Hormuz — the narrow chokepoint through which roughly 20 percent of global oil still passes — and Washington enforced a naval blockade on Iranian ports. The two powers had already been exchanging fire over shipping lanes.

According to US Central Command, Iran’s IRGC attempted to strike a US warship twice in two days. Both attempts failed. In response, US forces struck five tankers: the M/T Kaviz, M/T Charminar, M/T Horizon 1, and M/T Riesco in the Gulf of Oman, plus the M/T Derya near Kharg Island. CENTCOM said crews were ordered to abandon ship before the vessels were rendered inoperable and later published video of the Riesco sinking.

Iran confirmed the Kharg Island strike on state broadcaster IRIB and reported a second tanker hit near the southern port of Jask. The IRGC expanded the claim to five tankers and added that it had retaliated against the Al Azraq base in Jordan with what it called fierce missile strikes, alleging damage to fighter jet hangars. Tehran also claimed ballistic hits on two US destroyers — the DDG-119 and DDG-53 — and later said its naval forces targeted eight additional tankers in the region, causing what it described as great damage. Washington offered no immediate comment on those claims.

Jordan’s military said it intercepted 18 of 20 ballistic missiles fired at Al Azraq. Two landed in unpopulated areas. No casualties were reported.

The Economic Logic of Attacking Tankers

The tanker campaign is not random. It is economic warfare by another name, and it is designed to strangle Iran’s revenue while punishing anyone who looks like they might be helping Tehran move oil.

Secretary of State Marco Rubio put the strategy bluntly on a trip to Colombia. “For every time they try to hit US naval ships, they’re going to lose tankers,” Rubio told reporters. The message was clear: the US would target Iran’s commercial maritime assets as a proportional response to Iranian attacks on American warships.

That calculus has broader consequences. The tankers hit were Iranian-flagged or Iranian-operated, but the shipping insurance, financing, and chartering networks that keep them moving are global. When a tanker goes up in smoke near Kharg Island, the risk premium on Gulf shipping rises for everyone. And insurers do not raise premiums just for Iranian-owned vessels — they raise them for every vessel passing through the same waters.

That is why the escalation matters well beyond Washington and Tehran.

What Asia Should Worry About

Japan imports the vast majority of its liquefied natural gas and a large share of its crude from the Middle East. South Korea’s refineries are among the most energy-intensive in the world, and both countries rely on the Strait of Hormuz for the bulk of those deliveries. When Iran announced a restricted zone beyond the strait and warned that any ship entering it would face sanctions, Tokyo and Seoul had already begun diversifying — but diversification is slow, and alternatives are limited.

The closure of Kharg Island’s export terminals, even temporarily, removes a critical node from the supply chain. If Iran continues to expand its restricted zone and target commercial tankers, the disruption will not stay contained to Iranian oil. It will ripple through global spot markets, drive up freight rates, and force refineries in Chiba and Ulsan to adjust their feeding patterns on short notice.

Chinese and Indian refiners are likely feeling similar pressure. China is already one of Iran’s largest oil customers, and India has quietly increased purchases since the war began. When the US targets tankers, it is not only hurting Iran — it is making it harder for everyone to buy Iranian oil without exposure to secondary sanctions or physical danger.

Who Gains, Who Loses

Iran loses the most in the short term. Its export infrastructure is under direct fire, its navy is outgunned, and its attempts to retaliate — missile strikes on Jordan, claims against US destroyers — have so far produced little material damage. The IRGC’s claim that it captured a US unmanned submarine was contradicted by Washington, which said the drone malfunctioned and carried no classified equipment. Whether the drone was lost or merely drifted is less important than the fact that Iran is struggling to find leverage.

The US gains tactical pressure. By targeting tankers, Washington is striking at Iran’s economic lifeline without committing ground troops. But the strategy carries strategic risk. Every tanker sunk raises the global price of oil, and higher prices embolden Iran’s narrative that the US is waging economic war on the region — a narrative that complicates diplomacy and makes de-escalation harder.

Jordan finds itself dragged into a conflict it did not start. Al Azraq hosted US forces as part of a broader regional coalition, but the Iranian missile strikes prove that the base is within range of Iranian long-range fire. That reality will force Washington and Amman to rethink their forward posture.

The Days Ahead

The immediate question is whether the US will continue the tanker campaign and whether Iran will expand its target set beyond military bases to commercial ports or energy infrastructure in the Gulf. The IRGC had already warned of imminent attacks on tankers near Bahrain and Kuwait, telling crews to evacuate immediately. If those threats are carried out, the conflict moves from the Gulf of Oman into the heart of the region’s most congested shipping lane.

Oil prices may hold near $100 for now, but that assumes no further escalation. A sustained attack on Gulf shipping — not just Iranian tankers but neutral-flagged vessels caught in the crossfire — could push crude well above $110 and force emergency fuel releases from strategic reserves in the US, Japan, and South Korea.

The IAEA has already raised alarms about Iran’s nuclear access as Western powers push for a UN referral. If the military conflict continues to widen, the non-proliferation dimension could come into focus faster than most analysts expect.

The Takeaway

The US-Iran tanker war is no longer a local dispute. It is a conflict that threatens the flow of energy through one of the world’s most critical chokepoints, with direct consequences for Asian economies that cannot afford disruption. Washington is betting that economic strangulation will force Tehran to the table. Tehran is betting that pain at home will force the US to negotiate. Both calculations assume the other side will blink first — and in the meantime, the global market is paying the price.

The next move matters. If Iran expands its restricted zone and starts targeting non-Iranian tankers, the conflict becomes a regional shipping crisis. If the US escalates beyond tankers to Iranian ports or refineries, the war widens further. Either outcome puts upward pressure on oil that the world has not seen in years.

For now, the Strait of Hormuz remains closed, Kharg Island is under attack, and the price of a barrel of crude tells the story better than any statement from Washington or Tehran.