Hormuz Shipping Nears a Standstill as the U.S.–Iran Truce Collapses

The truce initially appeared to support a reopening. The June 17 agreement was intended to end military operations and establish a 60-day period for negotiations, with provisions for safe commercial passage. But attacks on ships after the agreement, followed by renewed military and economic pressure, undermined confidence in the arrangement.

What happened at Bab el-Mandeb?

Bab el-Mandeb remained active, but it was not insulated from the conflict. Reuters recorded 20 vessels—12 tankers and eight bulk carriers—passing through on August 3, with traffic little changed from the previous day. That is materially different from the near-standstill pattern reported at Hormuz.

The risk was nevertheless expanding southward. Reuters reported separate attacks on shipping in the Gulf and at the entrance to the Red Sea as negotiations faltered. CNBC reported that an Iran-aligned Houthi attack on a cargo ship in Bab el-Mandeb killed six people, the first reported fatalities from Red Sea shipping attacks since the war began.

The result was a two-chokepoint problem with different operating conditions: Hormuz became the primary bottleneck for Gulf traffic, while Bab el-Mandeb remained a live alternative route under threat. Iran also signaled that the Red Sea gateway could become another pressure point through its Houthi allies, potentially extending disruption from the Gulf to the Red Sea.

Why did Washington and Tehran disagree over whether Hormuz was open?

The dispute was partly about facts on the water and partly about authority.

President Donald Trump said Hormuz was open to shipping and rejected the idea that meaningful negotiations with Iran were taking place. U.S. officials also claimed control of the waterway; Reuters reported that Trump said the United States had “total control.”

Iran presented the opposite position. Iranian officials said the strait would remain closed unless Washington met conditions including ending the port blockade, sanctions and military threats. An Iranian military official described Hormuz as being under Iran’s “control and management.”

Both claims could coexist with the observed shipping data only if “open” and “closed” are understood differently:

• Open in a narrow physical sense: Some vessels could still transit.
• Closed or unusable in a commercial sense: Attacks and uncertainty discouraged normal traffic.
• Contested in a political and military sense: Each side claimed the authority to determine which vessels could pass and under what conditions.

The practical answer, therefore, was not a normal reopening or an absolute seal. Hormuz was technically passable but commercially constrained—an unstable condition that left every voyage exposed to changing military and diplomatic decisions.

What does Iran’s “fully offensive” posture mean?

On August 17, a senior Iranian official told Reuters that Iran would shift to a “fully offensive” military posture because efforts to negotiate a permanent end to the war had stalled. The statement came as Washington ruled out extending the temporary ceasefire.

That language suggests a move away from a narrowly calibrated response to individual attacks and toward a broader coercive campaign. Reuters described Tehran’s strategy as using trade routes, shipping lanes and energy infrastructure to raise the cost of confrontation and force U.S. concessions.

The wider campaign can involve several overlapping tools:

• attacks or threats against commercial shipping;
• pressure on energy infrastructure and maritime chokepoints;
• cyber operations and reconnaissance;
• information and psychological operations;
• proxy or covert activity; and
• selective missile and drone threats.

Research on Iran’s conduct in the conflict describes a hybrid model that combines asymmetric military action, cyber operations, information warfare and proxy attacks. Artificial intelligence may increase the speed and scale of those existing capabilities, but the available evidence does not establish that every reported operation is AI-enabled.

The strategic purpose is not necessarily to win a conventional military victory. It is to impose costs across several fronts at once, make the conflict economically painful and persuade Washington that continued pressure is more expensive than compromise. That assessment is consistent with reporting that Tehran sees disruption of trade and energy as one of its strongest sources of leverage.

Why could U.S. pressure create a reciprocal-deterrence trap?

Reducing vulnerable U.S. forces in the Gulf could limit Iran’s opportunities to strike exposed bases and personnel. But it would not end the confrontation. Instead, Washington could rely more heavily on stand-off tools such as sanctions, blockade pressure, intelligence collection, cyber capabilities and precision unmanned systems.

From Washington’s perspective, those measures can preserve pressure while reducing the risks of placing more troops directly within reach of Iranian attacks. From Tehran’s perspective, the same measures may look like continuing warfare by other means—especially when they threaten trade, ports, energy revenue or regime security.

Iran could respond asymmetrically against shipping, regional infrastructure, U.S. partners, digital networks or information systems. Analysts have described the conflict as a contest in which Iran seeks to use calibrated or expanded pressure to extract concessions without necessarily triggering a response it cannot survive.

That creates a dangerous feedback loop:

1. The United States reduces exposed forces and increases remote economic, intelligence or technological pressure.
2. Iran interprets the pressure as an ongoing attack and expands disruption beyond conventional retaliation.
3. Washington treats those actions as evidence that more coercion is necessary.
4. Each side calls its next move deterrence while the other side experiences it as escalation.

Cyber and covert activity make the loop harder to control because attribution can be delayed or disputed. A strike on a vessel, port or regional facility that causes deaths could also force leaders to respond before diplomatic channels have time to clarify what happened. Research on the conflict describes this convergence of kinetic, cyber, electronic and psychological warfare as a defining feature of the confrontation.

What is the main risk for the region and global trade?

The immediate risk is prolonged disruption rather than a single, cleanly defined closure. If commercial operators continue avoiding Hormuz, energy shipments may be delayed, rerouted or subjected to higher security and risk costs. Reuters reported that roughly 20% of global oil and liquefied natural gas shipments can pass through the strait, underscoring the potential scale of any sustained interruption.

The broader danger is escalation across linked systems: Gulf shipping, energy infrastructure, U.S. forces, regional partners, cyber networks and the Red Sea route. A lethal maritime incident, a misattributed cyberattack or a strike causing major casualties could eliminate the political space for restraint.

That outcome is not inevitable. But the expired June 17 agreement left the central disputes—military pressure, sanctions, maritime authority and the terms of passage—unresolved. Until those questions are settled, Hormuz is likely to remain technically navigable but strategically contested, while Bab el-Mandeb remains a vulnerable second pressure point.