Breaking: Iran closes the Strait of Hormuz amid ceasefire deal violation

Rewrite this financial news report into a clean, professional blog post. Keep the core facts about the US-Iran MOU and Switzerland meeting postponement. If there are currency data tables or heat maps, summarize their main takeaway cleanly in text and remove the raw table code. Keep all basic paragraph HTML formatting: Iran says it is closing the Strait of Hormuz after accusing the United States (US) and Israel of violating the ceasefire. According to Iran, the decision came over the continued Israeli strikes in Lebanon.The Iranian Revolutionary Guard Corps Navy issued a warning to all vessels: “Do not approach the Strait of Hormuz; otherwise, your security will be jeopardized.”This is a developing story; more to come.