Following weeks of intense conflict between the United States and Iran, the two countries agreed to a two-week cease-fire in April intended to create space for further negotiations and the possibility of a lasting peace. However, tensions rapidly surged anew, centered on control of the Strait of Hormuz, a vital chokepoint for global oil transportation.
Shortly after the cease-fire, clashes reignited when the U.S. imposed a naval blockade on Iranian ports. Iran responded by attacking commercial vessels and announced it was closing the strait, escalating the confrontation. This sequence of advances and retreats has characterized the conflict, with intermittent fighting followed by brief periods of calm.
Experts note that such fluctuations are common in peace processes, where cease-fires and agreements are often fragile and violations can occur amid ongoing negotiations. Laura Wise, a research fellow at the University of Edinburgh, remarked that while cease-fire violations are expected during talks, the degree of volatility and the highly publicized shifts in the situation between the United States and Iran have been exceptional. She also highlighted the complexity added by what she described as the U.S. government’s focus on reaching a deal rather than securing long-term peace.
In May, tensions escalated as the U.S. Navy commenced escorting commercial vessels through the Strait of Hormuz, prompting Iran to increase attacks on shipping. The United States responded militarily, leading to further hostilities. By mid-June, both nations announced a new memorandum of understanding that called for a 60-day halt in hostilities and led to the lifting of the U.S. naval blockade.
Despite this agreement, lack of clarity over control and navigation rights in the strait persisted. Clashes resumed later in June after the U.S. accused Iran of attacking another commercial vessel. Though the two sides again agreed to a temporary cessation of fighting within days, hostilities soon resumed. Following additional Iranian attacks on maritime targets, then-President Donald Trump declared the cease-fire void on July 8 and launched an offensive campaign of airstrikes against southern Iran, bringing the countries to the brink of full-scale war.
A temporary pause in military action occurred at the end of July, but renewed exchanges of strikes quickly followed. The cycle of conflict and brief cease-fires has continued, with Trump citing the existence of negotiated "perimeters of a deal" as a reason for halting some U.S. attacks in subsequent days. The conflict remains volatile, with control over the Strait of Hormuz at the core of ongoing disputes between Washington and Tehran.