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.

"Maybe this will be the next fall in the domino effect of this regime," a former Israeli intelligence officer told Newsweek.

In Iran, Supreme Leader Ali Khamenei usually has the final say. But what happens when dies? Many people in the country want a ...

According to Iran’s constitution, upon the president’s death, the first vice president assumes temporary leadership. Together with the judiciary chief and the parliament speaker, they hold a ...

When revolution swept through Iran in 1979, transforming the country into an Islamic Republic, Mohammed Reza Pahlavi – Iran’s last Shah – fled the country.

Iran’s supreme leader may have the most exalted title, but Gary Sick says the Islamic republic’s real engine is the Revolutionary Guard. They run the economy, own major industries, and ...

Mousavi is also a war veteran and completed his military training and studies at the Supreme National Defense University in the aftermath of Iran’s Islamic revolution of 1979.