More than three weeks after the United States and Iran signed a memorandum of understanding (MoU) to end their war and restore shipping through the Strait of Hormuz, the future of passage through the vital waterway is once again under a cloud. The fragile truce has been severely tested by recent attacks on commercial vessels, leading to renewed military exchanges between the two nations and raising fears of a full-blown conflict.

The Strait of Hormuz, a critical maritime chokepoint, connects the oil- and gas-rich Persian Gulf to the open sea. Before the recent conflict, an estimated 20 million barrels of oil and petroleum products passed through the strait daily, representing about one-fifth of global oil consumption. Disruptions to shipping in this region have historically sent shockwaves through global energy markets and international trade.

Since the ceasefire agreement on June 17, at least five commercial vessels have been attacked in and around the strait. Recent incidents include the damaging of a Qatari liquefied natural gas tanker and a Saudi-flagged supertanker, following earlier attacks on a Singapore-flagged container ship and a Panamanian-flagged tanker. These attacks have prompted retaliatory strikes by the U.S. on Iranian territory.

U.S. President Donald Trump has expressed doubts about the survival of the truce, stating his belief that it is "over." Meanwhile, Tehran has issued renewed threats to close the Strait of Hormuz. The escalating tensions have placed the global economy, which relies heavily on the strait's unimpeded passage, in a precarious position.

The latest surge in hostilities began on June 25 with an attack on the Singapore-flagged container ship Ever Lovely, which was struck by a projectile but continued its voyage without injuries. Two days later, the Panama-flagged tanker Kiku was hit by a drone while carrying over 2 million barrels of crude oil. The U.S. attributed these attacks to Iran and responded with strikes on Iran's southern coastal cities on June 26 and June 27.

Iran retaliated by firing missiles and drones at U.S. bases in Bahrain and Kuwait, leading to a temporary de-escalation and the initiation of talks. However, the situation deteriorated again between July 6 and July 7, with three more vessels attacked. The Qatari LNG tanker Al Rekayyat suffered significant damage and an engine-room fire, while the Saudi-flagged supertanker Wedyan was also hit.

These renewed attacks and subsequent military actions, occurring even as Iran held funeral ceremonies for its late Ayatollah Ali Khamenei, have severely undermined confidence in the MoU. The resumption of hostilities has left international observers and global markets watching closely for further developments, with the specter of a wider conflict and its economic consequences looming large.

Unresolved questions remain regarding the precise attribution of the latest attacks and the potential for a lasting de-escalation. The commitment of both the U.S. and Iran to de-escalation, as well as the willingness of regional players to mediate, will be crucial in determining the future stability of the Strait of Hormuz and its impact on global commerce.