The United States launched another wave of strikes on Iran late Sunday and early Monday, hitting targets across the country’s southern corridor as Tehran accused Washington of dragging the conflict into a new and more dangerous phase: attacks on economic infrastructure.
Iranian state media reported strikes across several cities in Khuzestan province, including Ahvaz, Omidiyeh, Mahshahr, Behbahan, Dezful, Andimeshk, Abadan and areas near Shadegan. Khuzestan is not just another province. It is Iran’s oil and petrochemical heartland, home to ports, refineries, power assets and industrial facilities that sit at the center of the country’s economy.
The latest reports are especially explosive because Iranian media said one person was killed and four others were wounded in a U.S. strike on a water pumping station in Mahshahr, a key industrial and petrochemical city on the Persian Gulf. The Guardian, citing Iran’s official IRNA news agency, reported the casualty claim and said the strike hit infrastructure.
If confirmed, that would push the conflict into a legally and politically volatile zone. The United States says its strikes are intended to degrade Iran’s ability to attack civilian mariners and commercial ships transiting the Strait of Hormuz. Iran says the strikes are no longer limited to military objectives and are now hitting infrastructure that supports civilian life and the national economy.
That distinction may decide whether the next phase of the war is treated as a military escalation — or as a potential violation of international humanitarian law.
U.S. Central Command said American forces began launching more strikes at 5 p.m. Eastern time Sunday “to continue degrading” Iran’s ability to attack civilian mariners and commercial ships through the Strait of Hormuz. The Associated Press reported that the United States had already hit around 140 Iranian targets in one round of strikes, including missile and drone launch sites, ammunition depots, communications equipment and other military sites.
But Iranian officials are describing something broader.
Iran’s state-run IRNA reported that several locations in Khuzestan were struck between 1:35 a.m. and 2:20 a.m. Monday local time. The deputy governor for security and law enforcement, Valiollah Hayati, said sites in Ahvaz, Omidiyeh, Mahshahr, Behbahan, Dezful, Andimeshk, Abadan and near Shadegan were hit and that authorities were still assessing damage. He denied reports that Ahvaz airport had been struck.
The timing matters.
The new wave of U.S. strikes came after Iran declared the Strait of Hormuz closed until further notice following an Iranian attack on a commercial vessel. The U.S. says the waterway remains open. Tehran says Washington has no right to override Iran’s security arrangements in the strait.
That standoff has now moved beyond maritime law and into the heart of the laws of war.
Under international humanitarian law, parties to a conflict must distinguish between military objectives and civilian objects. The International Committee of the Red Cross states that attacks may only be directed against military objectives and must not be directed against civilian objects.
The proportionality rule is also central. The ICRC says attacks are prohibited if they may be expected to cause incidental civilian death, injury or damage to civilian objects that would be excessive in relation to the concrete and direct military advantage anticipated.
That is where Iran’s latest claim becomes dangerous for Washington.
If the U.S. is striking missile systems, air defenses, drone units, IRGC boats or communications networks used to attack ships, Washington will argue those are lawful military objectives. But if strikes damage water systems, power infrastructure, ports, petrochemical facilities or railway bridges without a clear and direct military purpose, Iran will argue the United States is attacking civilian and economic infrastructure under the cover of a Hormuz security operation.
Iran is already making that case.
Tehran’s Foreign Ministry condemned the latest U.S. strikes as “aggressive” and said they had made months of diplomacy futile. The ministry said Washington had returned insecurity to the Strait of Hormuz and disrupted international commercial shipping by interfering with Iran’s efforts to manage transit arrangements through the waterway.
Mohammad Bagher Qalibaf, Iran’s parliament speaker and a key figure in negotiations, issued a sharper warning.
“The era of one-sided deals is OVER,” he wrote on X, according to the Guardian. “We told you: keep your word or pay the price. Reality is knocking.”
That statement is important because it signals Tehran’s view that the conflict has passed from negotiation into enforcement. Iran is no longer framing its response as symbolic retaliation. It is presenting it as the cost of U.S. violations.
The regional response is already widening.
Iran has struck targets across the Gulf in states hosting U.S. forces, including Bahrain, Kuwait, Qatar, Jordan and Oman, according to the Associated Press. Missile alerts sounded in Bahrain, home to the U.S. Navy’s 5th Fleet. Qatar said it intercepted incoming fire, while Oman summoned Iran’s ambassador after drone attacks struck sites in areas near the waterway.
The risk is that every new U.S. strike inside Iran now creates two separate escalation tracks.
The first is military: Iran may expand attacks on U.S. bases, Gulf ports, oil platforms and allied air defenses.
The second is legal: Iran may push the case that Washington is violating both the U.N. Charter and the laws of armed conflict by striking infrastructure inside a sovereign state.
The U.N. Charter preserves the right of self-defense if an armed attack occurs, but requires measures taken in self-defense to be reported to the Security Council. Washington is likely to argue its actions are defensive, tied to protecting shipping and responding to Iranian attacks in Hormuz. Iran will argue the U.S. is committing aggression, especially if the target list includes civilian-linked economic infrastructure.
The fight over legality will matter because of what comes next.
If water systems, power networks, transport lines or petrochemical facilities are hit, the issue is not only whether the target had some military relevance. It is whether the expected civilian harm was excessive, whether the object was truly a military objective, and whether the attacking force took feasible precautions to avoid civilian damage.
Those are not minor legal details. They are the difference between a lawful strike and a possible war crime allegation.
The battlefield geography makes that line even more sensitive.
Mahshahr is tied to Iran’s petrochemical economy. Abadan is historically connected to Iran’s oil infrastructure. Ahvaz is a major urban center in an energy-rich province. Qeshm Island and Bandar Abbas sit at the mouth of the Strait of Hormuz, where commerce, military logistics and civilian life overlap.
That overlap creates the “dual-use” problem: infrastructure that may serve both civilian and military functions. It is precisely in those gray zones that international law becomes most contested.
The United States says it is trying to keep commercial shipping safe.
Iran says the U.S. is the reason commercial shipping is now unsafe.
The facts on the ground are escalating faster than diplomacy can absorb. Oil prices opened sharply higher Monday after the U.S. strikes and Iran’s announcement that it would close Hormuz, with Brent crude rising nearly 4% in early trading.
That is the strategic effect Iran wants.
Tehran does not need to defeat the U.S. military outright to change the calculation. It only needs to make the Gulf more dangerous, more expensive and harder to insure. A damaged ship, a struck port, a missile alert in Bahrain, a drone over Oman and a strike on infrastructure in Khuzestan all point in the same direction: the war is moving from military pressure to economic pressure.
That is why this moment is critical.
If the U.S. continues striking Iran’s southern corridor, and Iran continues hitting Gulf states that host American forces, the conflict could become a rolling regional infrastructure war — one fought through ports, water systems, shipping lanes, energy facilities, air defenses and insurance markets.
That kind of war is harder to contain than a single exchange of missiles.
It spreads by cost.
It hits civilians indirectly.
It drags neutral states into the blast radius.
It turns every port, platform, runway, pumping station and logistics hub into a potential legal argument and military target.
The United Nations secretary-general has warned that a return to full-scale hostilities would have catastrophic consequences. But the region may already be entering something just as dangerous: a war below full scale, fought against the systems that keep the Gulf functioning.
Iran’s message is now clear.
If Washington keeps striking, Tehran will not limit the answer to Iran’s borders.
And if economic infrastructure is now part of the battlefield, the consequences will not stay military for long.
