U.S. and Iranian negotiators headed to a Swiss venue Saturday for talks on adding key details to their interim agreement to halt the war, hours after Tehran said it closed the Strait of Hormuz because of Israel’s attacks in Lebanon and warned that little might be achieved if the fighting doesn’t stop.

Iran to Send Delegation to Switzerland to Follow Up on U.S.-Iran Agreement, State Media Reports. Vance Says U.S. Officials on Ground for Iran Talks; No Evidence Tehran Is Closing…

Iran said Saturday it was closing the Strait of Hormuz again over Israeli attacks in Lebanon, jolting a fragile US-Iran agreement just as negotiators headed to Switzerland to try…