The recent 12-day war between Israel and Iran has raised questions about who — or what — could replace Iran's 86-year-old Supreme Leader Ayatollah Ali Khamenei when he dies.
Jackie Northam is NPR's International Affairs Correspondent. She is a veteran journalist who has spent three decades reporting on conflict, geopolitics, and life across the globe - from the mountains of Afghanistan and the desert sands of Saudi Arabia, to the gritty prison camp at Guantanamo Bay and the pristine beauty of the Arctic.