Iran says it is closing Strait of Hormuz over Israeli attacks on Lebanon

Iran announced the closure of the Strait of Hormuz just three days after it reopened, citing the U.S. failure to prevent Israeli attacks on Lebanon as a violation of a new ceasefire deal. This marks the first major crisis between the U.S. and Iran since the agreement, with U.S. officials noting no observed Iranian military movements to support the closure. President Trump's envoys are in Switzerland for potential nuclear negotiations, while the Iranian delegation has not yet arrived.