Iran announced the closure of the Strait of Hormuz on Saturday, citing Israeli military strikes on Lebanon as justification, while the United States and Iran simultaneously confirmed plans to hold negotiations in Switzerland on Sunday. The strait, through which roughly a fifth of the world's oil supply passes, has been a recurring pressure point in Iran's standoffs with Western powers and their regional allies.

President Trump responded to the closure by threatening to impose tolls on the waterway, a novel economic threat that drew immediate attention from both domestic and international observers. Vice President JD Vance is expected to be involved in the Switzerland talks, which represent the latest round of diplomatic engagement over Iran's nuclear program amid ongoing regional hostilities.

The closure of the strait escalates an already volatile situation in the Middle East, where Israeli operations targeting Hezbollah in Lebanon have continued to reverberate across the region. Iran has historically used threats to close the Strait of Hormuz as a pressure tool during periods of heightened tension, though actual enforcement has been rare and contested.

Inside Iran, the diplomatic and military maneuvering is unfolding alongside a surge of domestic unrest. Protests have intensified across the country, with citizens publicly demanding an end to rule by Supreme Leader Ayatollah Ali Khamenei. The convergence of external pressure and internal dissent represents one of the more complex moments the Iranian government has faced in recent years.

Whether the Switzerland talks will yield progress on nuclear negotiations remains uncertain. The U.S. has maintained that a diplomatic resolution is possible while keeping military and economic pressure in place. Iran's decision to close the strait — announced just hours before the scheduled talks — signals that Tehran intends to negotiate from a position of maximum leverage.