Iran dealt two quick blows to the interim agreement with the United States on Saturday, angered by Israel’s continued attacks in Lebanon, saying it had closed the Strait of Hormuz and announcing that while its negotiators were going to Switzerland for talks, not much is likely to happen there. Key mediator Pakistan, meanwhile, said the technical-level talks will begin on Sunday in Bürgenstock, Switzerland, with Qatari mediators also taking part. In Tehran’s first salvo, Iran’s joint military...