Iran Declares Strait of Hormuz Closed and US-Iran Truce Breached After Israeli Strikes Kill at Least 16 in Lebanon

Iran's joint military command declared the Strait of Hormuz closed and the 60-day United States-Iran truce framework violated on June 20, blaming Israeli strikes on Nabatiyeh and surrounding villages in southern Lebanon that Lebanese state media said killed at least 16 people a day after a ceasefire took hold. The naval division of the Islamic Revolutionary Guard Corps (IRGC) warned vessels not to approach the strait, saying ships attempting to cross could encounter mines or be targeted, CNN reported. The declaration reverses the central premise of the roadmap reached days earlier, that a path to lifting Iran's oil sanctions had removed the war-risk premium from crude.

The closure is disputed rather than physically in force. US Central Command (CENTCOM) said 55 merchant ships carrying more than 17 million barrels of oil transited the strait, with traffic continuing the following day, and reported that commercial passage remained intact as US forces operated in the area to support freedom of navigation, according to CENTCOM. Iran's own foreign ministry described shipping as operating normally, even as Al Jazeera reported that some vessels stalled after the announcement. The contradiction leaves the waterway contested, not shut.

The strikes that triggered the declaration followed a ceasefire between Israel and Hezbollah that began the previous afternoon. The Israel Defense Forces said it struck Hezbollah targets across southern and eastern Lebanon after the group attacked Israeli troops, with Lebanese first responders putting the broader toll at at least 27 killed. President Donald Trump threatened renewed US military strikes in response to Iran's move.

Markets registered the dispute, not a supply cutoff. Brent crude traded near 80 dollars a barrel, up roughly 1 percent, while US West Texas Intermediate futures rose to about 77.52 dollars, CNBC reported. The muted move stands in contrast to May, when Brent rose above 100 dollars during the earlier Strait of Hormuz crisis. Traders appear to be pricing the closure as a political assertion contradicted by the ships still moving through the strait.

The underlying roadmap remains formally in place but strained. Negotiators from the two countries had ended a first round of talks in Switzerland with agreement on a 60-day window for technical negotiations, led by US Vice President JD Vance and Iranian parliament speaker Mohammad Bagher Ghalibaf, Al Jazeera reported. Under that preliminary framework, Iranian oil and petrochemical exports are waived, the naval blockade is lifted, some frozen Iranian assets are released, and a reconstruction program begins, with Tehran awaiting a US Treasury announcement on the formal removal of oil sanctions. Shipping firms had already remained cautious about transiting Hormuz, Israeli business daily Globes noted, and Tel Aviv equity trading had reflected guarded optimism about the US-Iran channel before the latest declaration. Iran has said it will not proceed in talks if Israel continues striking Lebanon, making the ceasefire in Lebanon the immediate hinge for whether the roadmap survives.