As Iran’s Supreme Leader Khamenei faces health and political crises, three groups—MEK, Green Movement, and Reza Pahlavi’s monarchists—are poised to challenge for power. Explore their roles amid escalating Iran-Israel tensions and regime instability. As Iran’s Supreme Leader Khamenei faces health and political crises, three groups—MEK, Green Movement, and Reza Pahlavi’s monarchists—are poised to challenge for power. Explore their roles amid escalating Iran-Israel tensions and regime instability.