Startling upheaval follows the assassination of Iran’s top ruler, Ayatollah Ali Khamenei, leaving a massive power vacuum and uncertainty about who will ascend to the throne of Iran’s leadership. The title of supreme leader carries immense clout, far beyond the presidency, and Khamenei held sway over every facet of the state. “He dominated all aspects of life,” notes Ali Vaez of the International Crisis Group, underscoring the depth of his influence. His death ends a 37-year era of dominance, and the political landscape now faces a critical test as the regime negotiates succession amid ongoing U.S. and Israeli military actions.
What happens next is unclear, and much depends on the constitutional mechanisms Iran has in place to handle the leader’s death. The regime has already activated a temporary three-person governing panel consisting of the president, the head of the judiciary, and a Guardian Council appointee. This trio is described by Middle East analyst Amin Saikal of the Australian National University as “totally loyal to the regime,” and some may be considered potential contenders for the supreme leadership themselves. They’ve announced their intent to continue Khamenei’s path, at least in the short term.
However, the three-person council’s authority lasts only until the Assembly of Experts—the 88-member clerical body elected every eight years—selects a new supreme leader. Saikal cautions that the Assembly is fragmented and prone to bargaining and compromise, which could shape who emerges as the next figure at the helm. Rumors have circulated that the foreign ministry expects a quick decision, but experts like Ali Vaez are skeptical. Vaez suggests postponing a formal appointment until after broader regional turmoil settles, noting that making a hurried selection could invite targeted retaliation against the chosen successor.
Even with Khamenei’s death, the regime’s operative framework remains intact. Vaez emphasizes that it was never a one-man system; rather, a functional structure persisted to sustain the Islamic Republic, and it could become more pragmatic or pluralistic without becoming truly democratic.
The prospect of a military takeover also looms in discussions about stabilizing or destabilizing the regime. In the wake of the leader’s death and ongoing hostilities, power has moved toward two former Revolutionary Guards commanders—the Supreme National Council secretary Ali Larijani and the speaker of the parliament, Mohammad Baqer Qalibaf. Both men share Khamenei’s hardline approach: resist concessions under pressure, as relaxing stances could invite further demands. Whether this accumulation of military influence will destabilize clerical rule remains uncertain. Amin Saikal argues that a full military overthrow is unlikely; instead, the Guards and allied institutions are more likely to function as defenders of the current system, anchoring regime survival and safeguarding themselves in the process.
The possibility of a popular uprising to seize power is another avenue some commentators have explored. U.S. leaders have publicly encouraged Iranians to rise up, aided by external strikes. But analysts like Saikal say a successful domestic overthrow would likely require on-the-ground military backing—something the United States has ruled out, and which would be politically delicate for any external actor to pursue. Internal defections within security forces could, in theory, empower the people, but Saikal notes that Iran remains deeply polarized: substantial factions both oppose and support the regime.
Vaez stresses that even with heavy external pressure, eliminating the regime’s core capabilities would demand boots on the ground. He reminds us that the regime has shown a capacity for brutal crackdowns against protesters—killing thousands with small arms last month—meaning a purely air-backed strategy is unlikely to topple the government.
Overall, most observers expect a protracted, potentially long war rather than a swift regime change. Saikal argues that Iran’s leadership is designed for endurance and will likely fight until the last drop of blood. The consensus is that removing Ayatollah Khamenei would be a blow to the regime, but not an existential death blow. The survival instinct embedded in Iran’s power structures suggests that the core apparatus of the Islamic Republic will endure, even as the trajectory of the country’s leadership and its future path remains unresolved and contested.
