U.S. Effort to Reopen Strait of Hormuz Tests Fragile Iran Ceasefire Amid Rising Tensions

The fragile ceasefire between the U.S. and Iran faced a critical test on Monday after Washington launched Project Freedom, an effort to reopen the Strait of Hormuz for commercial shipping. The move risked reigniting full-scale conflict just weeks after the U.S. and Israel attacked Iran on February 28, prompting Tehran to close the strait—a key strategic choke point.

Despite the escalation, a ceasefire appeared to hold on Tuesday, even as Iran launched missiles and drones at the United Arab Emirates in retaliation for the U.S. operation.

U.S. Military Actions and Iran’s Response

On Monday, the first day of the operation, the U.S. military reported that two American-flagged merchant ships successfully transited the strait. The U.S. also claimed it fired on Iranian forces, sinking six small boats that were targeting vessels.

Iran disputed the U.S. account, with state TV reporting that only two civilian cargo boats were hit, resulting in five civilian deaths. Ship tracking data showed a Panamanian-flagged crude oil tanker moving toward the strait’s center on Tuesday morning, though its intent to pass through remained unclear.

Strategic and Economic Implications

The Strait of Hormuz, through which roughly 20% of the world’s oil and natural gas trade—along with fertilizers and other petroleum products—typically passes, has been a major point of leverage for Iran. Its closure has driven fuel prices higher, destabilized the global economy, and strengthened Tehran’s negotiating position. Reopening the strait would strip Iran of this critical advantage.

However, such efforts risked escalating tensions further, potentially breaking the fragile ceasefire that has held for more than three weeks. Iran has accused the U.S. of violating the truce by attempting to force open the strait.

Statements from Key Figures

Iran’s parliamentary speaker and chief negotiator, Mohammad Bagher Qalibaf, accused the U.S. of undermining regional security in a post on X (formerly Twitter) on Tuesday:

“We know full well that the continuation of the status quo is intolerable for America; while we have not even begun yet.”

Qalibaf warned of a “new equation” forming in the strait and signaled that Iran had not yet responded fully to the U.S. actions. His statement did not mention ongoing indirect negotiations with the U.S., which are currently mediated through Pakistan.

U.S. President Donald Trump vowed a forceful response to Iranian efforts to halt passage through the strait, stating on Sunday:

“Iranian efforts to halt passage through the Strait of Hormuz will, unfortunately, have to be dealt with forcefully.”

Trump framed Project Freedom as an effort to assist tens of thousands of stranded seafarers on hundreds of ships trapped in the Persian Gulf since the war began.

Regional Fallout and Maritime Security

The U.S.-led Joint Maritime Information Center advised ships on Monday to cross the strait within Oman’s waters, establishing an “enhanced security area.” However, shippers remained cautious amid the heightened tensions.

The UAE bore the brunt of Iran’s retaliation, with its Defense Ministry reporting that air defenses intercepted 15 missiles and four drones fired by Iran.