Uncertainty in Iran's Supreme Leader Succession and the Trajectory of the Iran War

Executive Summary

Six months after succeeding Ali Khamenei, who was killed in a U.S.-Israeli airstrike in February 2026, Mojtaba Khamenei has yet to make any public appearance in person or via audio or video. The fact that the most specific evidence of his survival has come not from Iranian state media but from a statement by President Trump is highly suggestive. In this vacuum, there are signs that a structure is solidifying in which security officials and the Islamic Revolutionary Guard Corps (IRGC) are the de facto decision-makers. It is also observed that internal conflicts among hardliners are surfacing. As the current situation—where his status cannot be confirmed—is judged to be the most probable scenario (50% probability), the focus of any response should be on tracking the shift in de facto decision-making channels, rather than on the variable of the leader himself. However, given the opaque nature of Iran's internal power structure and the limitations on information verification, all assessments should be treated provisionally, as probabilities rather than certainties.

I. Situational Analysis

Uncertainty in Iran's Supreme Leader Succession: A Situational Analysis

1. Background and Developments

On February 28, 2026, Iran's Supreme Leader, Ayatollah Ali Khamenei, was killed in a U.S.-Israeli airstrike [3][5]. The strike also killed most of the family of Khamenei's second son, Mojtaba Khamenei [1]. Prior to this, Mojtaba had been a behind-the-scenes official who rarely appeared in public [1]. It was also observed during his father Ali Khamenei's lifetime that the elder Khamenei did not want him to be the successor [1].

Nevertheless, Mojtaba succeeded to the position of Supreme Leader in March [15]. Since his succession, he has not appeared in public [15][7]. Six months later, no audio or video of him has been released to the Iranian public [7].

Even after the June ceasefire agreement, known as the Islamabad Memorandum, Iran and Israel/the U.S. have continued to engage in sporadic clashes [3]. Six months into the war, Washington's stated goals of regime change and the dismantlement of nuclear facilities have not been achieved [5]. However, the issue of the Iranian Supreme Leader's physical status remains a symbolic achievement of the war [5].

2. Current Situation

In August, speculation surrounding Mojtaba's survival resurfaced within Iranian society [7][1]. The weekly magazine *The Atlantic*, citing sources in Tehran, reported the possibility of his death or brain death [14]. In response, President Trump personally stepped forward to deny these allegations [9][11]. In an August 26 call with conservative host Glenn Beck, Trump stated, "I don't think he's dead" [9]. At the same time, he explained that Mojtaba had sustained severe injuries across his body, including his left arm and leg [9] [Source deleted].

On August 28, Iranian state media released a message in Mojtaba's name [13]. It instructed cabinet members to "not publicize problems and instead highlight the nation's strength and resilience" [13]. The timing of this message, released just before President Pezeshkian's television appearance, is interpreted as a sign of failed coordination within the government [13]. Recently, long lines have formed at gas stations in Tehran due to fears of rising fuel prices, and the government had been attempting to placate public sentiment on the issue [13].

Around the same time, policy conflicts within Iran's hardline faction also came to the surface. Reports emerged of a public war of words between the hardline Speaker of Parliament, Ghalibaf, and other hardline figures [17]. The Swiss newspaper *Neue Zürcher Zeitung* (NZZ), citing personnel changes in security organizations, analyzed that Tehran is adopting a hardline stance both domestically and internationally "out of fear for its existence" [15]. The newspaper pointed out that in the absence of the Supreme Leader, it is the newly appointed security officials who are the ones actually voicing opinions [15].

3. Key Actors and Positions

Mojtaba Khamenei (Supreme Leader): Has not appeared before the public in person or via audio or video since his succession in March [7][15]. Public opinion questioning his very existence is forming within Iran [1]. Written messages released through state media remain the only evidence supporting his well-being [13].

Islamic Revolutionary Guard Corps (IRGC) and Security Officials: Presumed to be exercising de facto policymaking authority in the vacuum left by the Supreme Leader [15]. They are prioritizing regime survival, adhering to a hardline stance against the U.S. and maintaining the blockade of the Strait of Hormuz [15][12].

President Pezeshkian and the Cabinet: Their room for maneuver is constrained between the need to address economic difficulties publicly and the necessity of placating public sentiment [13]. The government's discretion in communicating with the public is limited by the Supreme Leader's office's directive to remain silent on problems [13].

Speaker of Parliament Ghalibaf: Reportedly clashed publicly with other hardline figures in a policy dispute within the hardline faction [17]. This suggests that the vacuum left by the Supreme Leader has served as a catalyst for friction between lower-level power institutions to surface [17].

The Trump Administration: Has repeatedly made public statements confirming Mojtaba's survival [9][11] [Source deleted]. However, the intelligence sources for these statements have not been disclosed. From Washington's perspective, the turmoil in Iran's top leadership could be used as a pretext to intensify pressure on Iran, such as by expanding secondary sanctions [5].

4. Key Issues

First, the factual reality of Mojtaba's survival and status remains unconfirmed. Amid conflicting accounts from President Trump and an anonymous source in *The Atlantic* [9][14], Iranian authorities have not provided any verifiable evidence beyond written messages [13].

Second, the extent to which the Supreme Leader's absence is affecting the actual governance of the state is unclear. It is difficult to determine whether the personnel reshuffles in security agencies and the adherence to a hardline policy are based on the Supreme Leader's directives or the independent judgment of lower-level power institutions like the IRGC [15].

Third, the potential impact of internal rifts among hardliners on future policy is a critical issue. Further observation is needed to determine whether the clash between Ghalibaf and other hardline figures is a one-time friction or an expression of a structural fissure emerging in the process of power realignment following the succession [17].

Fourth, tensions are accumulating between public discontent over economic hardship and the silence of the top leadership. As visible indicators of public hardship, such as rising fuel prices and long lines at gas stations, become more widespread [13], the fact that the Supreme Leader's office has instructed officials to refrain from publicizing these problems could deepen the disconnect between the government and public opinion [13].

II. In-Depth Analysis

Uncertainty in Iran's Supreme Leader Succession: An In-Depth Analysis

1. Analysis of Root Causes

The root cause of the current situation is that the Islamic Republic's unique succession system was unprepared for the exceptional circumstance of a leader's death during wartime. Under the Iranian constitution, the Assembly of Experts is the body responsible for appointing a successor when the office of Supreme Leader becomes vacant. However, the airstrike on February 28, 2026, destroyed not only Ali Khamenei himself but also the succession plan surrounding him [1][3]. Mojtaba was not officially designated as the successor during his father's lifetime [1]. There are observations that Ali Khamenei himself did not want him to succeed [1].

Nevertheless, Mojtaba's accession to the supreme leadership in March can be seen as more of a stopgap measure to fill a wartime vacuum than a normal procedure [15]. This weakness in procedural legitimacy provided fertile ground for the subsequent spread of speculation about his survival and status. Had he been a leader who came to power through a legitimate succession process, it is likely that rumors about his physical condition would have been swiftly refuted and disproven by the regime. In Mojtaba's case, however, the situation in which no audio or video has been released for six months has persisted [7], and the institutional mechanisms to quell such speculation have failed to function.

Another root cause is that the information vacuum is being filled not by the Iranian government but by external actors. The most specific explanation regarding Mojtaba's survival came not from Iranian state media but from U.S. President Trump [9][11] [Source deleted]. This signifies that the Iranian regime has lost control of the narrative surrounding its own Supreme Leader's physical condition.

2. Structural Context

Political Structure: Succession Legitimacy and an Inter-Factional Power Vacuum

The position of Supreme Leader in Iran is not merely symbolic; it is an institution with real power, including authority over appointments in the military, judiciary, state broadcasting, and the IRGC. For this power to be exercised effectively, the leader's existence must be visibly confirmed. However, Mojtaba has not appeared before the public even once since his succession [15][7]. As a result, written messages in the name of the Supreme Leader's office remain the only channel supporting his well-being [13]. In a message released on August 28, he instructed cabinet members to "not publicize the nation's problems and instead highlight its strength and resilience" [13]. The fact that this message was released just before President Pezeshkian's television appearance can be read as a sign of poor message coordination between the Supreme Leader's office and the executive branch [13].

Security officials are filling this vacuum. The NZZ, citing recent personnel changes in security organizations, analyzed that those actually voicing opinions are newly appointed hardline figures [15]. The reports of a public war of words between the hardline Speaker of Parliament, Ghalibaf, and other hardliners around the same time [17] also suggest that as the coordinating function of the Supreme Leader at the apex weakens, inter-factional disagreements are surfacing more than before. However, it is difficult to determine at this point whether these factional conflicts will lead to a crack in the regime itself or remain at the level of manageable policy disputes.

Economic Structure: War Fatigue and Public Hardship

The Supreme Leader's absence does not exist in a vacuum; it is intertwined with the economic hardship caused by a prolonged war. In Tehran, long lines formed at gas stations due to fears of rising fuel prices, and the government was attempting to placate public sentiment [13]. The fact that the Supreme Leader's office issued its directive to "refrain from publicizing problems" precisely when this public discontent was mounting [13] shows that the regime is concerned about the simultaneous spread of two signals: a leadership vacuum and economic hardship. Previous EAI analysis has also assessed that six months into the war, Iran's economy was bearing the costs of war from an "already fragile" state [7].

Security Structure: The Strait of Hormuz as Leverage and Leadership Risk

Iran's external bargaining power has heavily relied on its asymmetric leverage: control over the Strait of Hormuz [2][12]. If it becomes unclear who the final decision-maker is for wielding this leverage, negotiating partners like the United States and Oman will face the problem of having to reassess the credibility of the negotiation channel itself. With sporadic clashes continuing after the Islamabad Memorandum [3], the lack of clarity on whether Iranian policy decisions are coming from the Supreme Leader's office, the IRGC, or hardline parliamentary factions could act as a factor reducing the predictability of negotiations.

3. Historical Precedents and Comparative Cases

Since the Iranian Revolution, there has been only one succession of the Supreme Leader: upon the death of Ayatollah Khomeini in 1989. At that time, the succession process through the Assembly of Experts was not smooth, and there was controversy as Ali Khamenei himself was not initially considered a leading candidate for successor. However, that case was fundamentally different from the current one, as it was a natural death in peacetime and the succession process was conducted publicly. There is no precedent in the history of the Islamic Republic for a succession taking place during wartime, especially with the successor himself having been seriously injured in an airstrike.

As a point of comparison, one can look at cases in authoritarian regimes where rumors about a supreme leader's health have persisted for long periods. The longer a leader's public activities are suspended, the more speculation about a power transition spreads within the regime, which typically follows a pattern of attempting to quell these rumors through indirect proof, such as written messages or proxies. In the current Iranian case, the release of messages through state media has the character of such an attempt [13]. However, unlike previous cases, it is unusual that the credibility of this attempt is being backed by a foreign head of state [9][11]. This can be seen as an indication that the regime's capacity for self-contained legitimation has weakened compared to the past.

4. Key Variables Shaping Future Developments

The first variable is whether Mojtaba himself makes a public appearance. The moment he is seen or heard in person, a significant portion of the current speculation could be resolved. Conversely, the longer this situation persists, the more likely it is that written messages from state media alone will be insufficient to maintain domestic and international confidence.

The second variable is the balance of power between security officials and hardline parliamentary factions. Whether the public dispute between Ghalibaf and other hardliners is a one-time friction or the beginning of a sustained power struggle against the backdrop of the Supreme Leader's absence is a matter that will be determined by personnel trends in the coming weeks [17].

The third variable is the U.S. attitude. President Trump's repeated confirmation of Mojtaba's survival could be interpreted as an intention to keep negotiation channels open by preserving the existence of a negotiating partner [9][11] [Source deleted]. If Washington changes this position or pivots to using Mojtaba's absence as negotiating leverage, Iran's internal uncertainty could immediately be transformed into a diplomatic variable.

The fourth variable is the trend in public discontent. If dissatisfaction over fuel prices combines with distrust in the leadership, it may become difficult to manage public opinion solely with the government's directive to "not publicize problems" [13]. However, considering that mechanisms for suppressing civil society and dissident voices in Iran are still in effect [6], whether this discontent will transform into organized resistance is something that must be watched cautiously for now.