By July 16, 2026, the United States was conducting its fifth consecutive day of strikes against Iranian targets, marking the full collapse of a truce that Washington and Tehran had signed approximately one month earlier. The renewed warfare has drawn in multiple Gulf states, disrupted one of the world's most critical shipping chokepoints, and sent oil prices climbing for a fourth straight session.

The trajectory from ceasefire to open conflict was compressed into days. Iran declared the Strait of Hormuz closed late on Saturday, July 11, after hitting what Reuters described as an unauthorized vessel. The US responded by striking hundreds of Iranian targets. By July 13, US Central Command had completed a wave of offensive strikes hitting dozens of targets at multiple locations with precision weapons. President Trump resumed a port blockade on Iran beginning at 2000 GMT on Tuesday, July 14, according to Reuters.

Iran's retaliation has extended across the region. Iranian forces struck a US air base in Jordan, attacked Bahrain, and hit targets in Kuwait, according to Al Jazeera and Reuters reporting through July 16. Iran also struck a cargo ship in the Strait of Hormuz, an act that broke a 60-day ceasefire agreement between Washington and Tehran. On the US side, American forces struck an Iranian oil tanker on or around July 16, with Al Jazeera reporting that a US military unit disabled the tanker in the Strait. By mid-July, the US had also expanded military strikes into northern Iran, according to the Associated Press.

The Strait of Hormuz has become the conflict's gravitational center. Fewer vessels are now transiting the waterway due to ongoing military operations. Iran warned on July 16 that the Strait is a "red line" and vowed to resist "until the end," according to Reuters. Tehran also vowed to hit regional infrastructure if President Trump attacks Iran. Trump, for his part, publicly threatened to intensify strikes over the coming week, as reported by CNN. On July 13, Trump said the United States would be reimbursed 20% on all cargo shipped through the Strait and that the US would control the waterway.

Oil markets have responded sharply. Brent crude prices rose for a fourth consecutive day on July 16, and a Reuters analysis published the same day sketched a potential range from the $60s to over $110 depending on how the conflict evolves. Global equity markets mostly declined in mid-July amid the back-and-forth strikes, though oil prices saw at least one session of decline during the same window.

The collapse of the June truce reverses what the White House had framed as a durable settlement. In April 2026, the administration announced "Operation Epic Fury," a military campaign it said crushed the Iranian threat and produced a ceasefire along with Iran's agreement to reopen the Strait. An April 8 White House release described the operation under the banner "Peace Through Strength." The State Department's Office of the Legal Adviser published a legal defense of the operation on April 21, describing a "clear pattern of unprovoked Iranian aggression" and direct and proxy attacks against Israel as justification. In June, the White House published a release titled "President Trump's Iran Agreement Is America First in Action," asserting that the agreement ensures Iran will never obtain a nuclear weapon and reopens the Strait of Hormuz to free navigation. A joint statement from the US and the Gulf Cooperation Council on June 25 emphasized the importance of reopening the Strait and ensuring free, unconditional, and unrestricted navigation.

The earlier campaign included a strike on Iran's Fordow Fuel Enrichment Plant using 30,000-pound GBU-57 massive ordnance penetrator bombs, according to a Defense Department article. Trump had warned as early as June 2025 that Iranian closure of the Strait would be "economic suicide" for Iran.

The State Department has continued to build a sanctions and legal case alongside the military campaign. On July 14, it published a release titled "Iran: Dismantling Shamkhani's Illicit Shipping Empire," part of an effort to increase pressure on Iran over attacks on commercial shipping. The following day, a separate State Department release titled "Targeting Facilitators of IRGC Weapons Procurement" stated that Iran continued to threaten freedom of navigation in the Strait, including through attacking commercial vessels. Reuters reported that Iran-linked vessels had passed through the Strait ahead of the US blockade, around June 18.

The speed of the unraveling is striking. A truce signed in June, accompanied by administration claims of a permanent nuclear guarantee and free navigation, gave way within weeks to Iran's closure declaration, a US blockade, strikes across multiple Iranian regions, and Iranian attacks on US bases and Gulf state infrastructure. The administration's framing of the April agreement as a "Peace Through Strength" outcome now sits alongside a fifth day of bombing, a threatened escalation, and a waterway through which fewer and fewer ships are willing to transit. The gap between the declared settlement and the operational reality on the ground is the central fact of this story.