STRAIT OF HORMUZ — Fighting between the United States and Iran intensified on July 16, 2026, as the U.S. military conducted strikes deeper into Iran and Iran retaliated with missile and drone attacks on U.S. allies in the region. The escalation followed the collapse of a ceasefire brokered by Pakistan just weeks earlier and centers on control of the Strait of Hormuz, a chokepoint through which 20% of the world’s oil normally flows.

The U.S. military fired on a ship it accused of attempting to break a naval blockade of Iranian ports, part of a broader effort by President Donald Trump to reinstitute a Navy blockade targeting Iran’s maritime access. The Trump administration has framed its actions as necessary to restore free passage through the Strait of Hormuz, which the U.S. says must remain open to all commercial vessels. Iran, however, insists it has the authority to manage shipping transit through the strait and has demanded that the U.S. lift its blockade as a precondition for reopening the waterway fully.

Iran’s retaliation included launching missiles and drones at U.S. allies in the region and attacking commercial vessels that ignored its navigation rules, disrupting global energy markets. Tehran warned that future attacks could expand to target “all the infrastructure in the region.” Iran’s parliament speaker and lead negotiator, Mohammad Bagher Qalibaf, said his country is not formally declaring the June 17 ceasefire agreement void but emphasized that Iran’s continued commitment depends on the United States upholding its obligations under that deal. Qalibaf suggested Iran does not intend to keep the strait closed indefinitely, stating Tehran’s goal is to preserve what he called “Iranian arrangements” governing navigation while still allowing the “maximum safe passage of commercial shipping” under its rules.

The initial ceasefire agreement, brokered by Pakistan on June 17, called for a permanent end to hostilities and the reopening of the Strait of Hormuz. It also launched a 60-day negotiating process aimed at reaching a final deal on Iran’s nuclear program and other outstanding issues. That process has now halted, though neither the U.S. nor Iran has formally notified Pakistan of terminating the agreement.

Pakistan’s Foreign Ministry rejected claims that Islamabad had abandoned mediation efforts. “Let me dispel the impression that Pakistan has done hands up, and this is not the case,” ministry spokesperson Tahir Andrabi said at a news conference on July 16. He added, “It can be put on the backburner, but it stays,” and expressed confidence that “whenever the parties exhaust the logic of escalation, the formula for peace is there.” Andrabi also stated, “The parties eventually will have to come to the negotiating table to settle all outstanding issues.”

Mediators from Pakistan, Qatar, and Egypt continue working to revive talks. Meanwhile, U.S. officials have offered mixed signals about the path forward. Vice President JD Vance, in a podcast interview with Joe Rogan that aired July 15, stressed that the administration is “not going to bomb and bomb and bomb.” He argued, “You’ve got to actually be willing to talk and to try to figure out the problem,” and described military force as “one of the many tools that we have to solve the problem,” with “diplomacy” being another. Vance also expressed frustration with those who oppose negotiating with Iran, asking pointedly, “Well, then what is your proposal to get people to stop shooting at ships in the Strait of Hormuz?”

President Trump, speaking July 15 at the Pennsylvania Defense and Innovation Summit at the U.S. Army War College in Carlisle, Pa., repeated threats that only Iran’s return to negotiations can prevent U.S. attacks on civilian infrastructure such as bridges and power plants. He declined to set a deadline for talks, saying, “I don’t like giving deadlines, but they pretty much know, they know the story.” He added, “They better behave.” Trump also confirmed the reimposition of the naval blockade on Iranian ports, a move that directly triggered the latest round of hostilities after Iran refused to allow oil tankers and other commercial ships to pass freely through the strait.

The U.S. has attempted to mitigate disruption by arranging an alternate shipping route along Oman’s coast, but the effort has not offset the broader instability. The fighting resumed specifically over Iran’s refusal to guarantee unimpeded navigation through the Strait of Hormuz, underscoring that the management of this narrow waterway remains the core dispute between the two nations.

The Strait of Hormuz is one of the world’s most critical maritime chokepoints, normally handling about 20% of global oil supplies. Disruptions here have immediate and severe consequences for energy markets and global trade. The collapse of the Pakistan-brokered ceasefire and the return to active military confrontation raise the risk of wider regional conflict and prolonged economic instability.

Both sides continue to signal openness to diplomacy while escalating military actions, creating a volatile environment where miscalculation could deepen the crisis. The 60-day negotiating window established under the June 17 agreement has stopped, but neither party has formally abandoned the framework, leaving a narrow opening for renewed mediation by third parties like Pakistan, Qatar, and Egypt.