Uncertainty deepens over Iran as U.S. and Israeli attacks continue

American and Israeli attacks on the Islamic Republic of Iran that killed the Ayatollah Ali Khamenei, prompting retaliatory strikes across the region, are the latest chapter in a nearly half-century stand-off between Tehran and Washington. “Sunday Morning” national correspondent Robert Costa talks with New Yorker writer Robin Wright about Iran’s history and ambitions, and about President Trump’s next steps after launching strikes.