The Biden administration is closely watching how Iran reacts to the sudden death of its president, expecting the regional status quo to hold while still wary that one allegation could escalate tensions with Israel. For now, senior U.S. officials expect few — if any — changes in the way of Iran’s policies before the Islamist-led country elects a new president following the weekend helicopter crash that killed Ebrahim Raisi and Foreign Minister Hossein Amirabdollahian. Iran’s Supreme Leader...