There are moments when personnel decisions reveal more about a political system than its speeches, slogans, or diplomatic statements. The military hierarchy now taking shape in Tehran is one of those moments. Ayatollah Mojtaba Khamenei may represent a new leadership at the apex of the Islamic Republic, but the men being elevated around him belong overwhelmingly to an older political world: the revolution, the Iran-Iraq War, intelligence and counterintelligence operations, ideological enforcement, confrontation with Israel and the United States, and the suppression of dissent at home.
The message for Washington should be clear: leadership succession in Tehran should not be confused with political transformation. The Islamic Republic is changing personnel because war and assassinations created vacancies, but the choices made to fill those vacancies demonstrate remarkable continuity in the regime’s understanding of power. Tehran is not responding to vulnerability with reform. It is responding with fortification.
That distinction matters because every political order eventually reveals what it fears most. Governments possessing durable legitimacy can survive leaders, parties, and policies. Authoritarian systems face a different problem: as legitimacy weakens, the distinction between protecting the state and protecting the ruling regime becomes increasingly difficult to maintain. The army, intelligence services, and internal-security institutions are judged not simply by whether they can defend the country, but also by whether they can preserve the political order controlling it. The careers of the men now being promoted illustrate that transformation.
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Ali Abdollahi, appointed chief of the general staff, belongs to the revolutionary-security generation that emerged with the Islamic Republic itself. He joined the Islamic Revolutionary Committees after the 1979 revolution and soon entered the newly created Revolutionary Guard. His elevation is not a generational break or evidence of military modernization. It is a return to a veteran shaped by the formative institutions of the revolutionary state.
Kiumars Heydari, now deputy chief of the general staff, reveals something still more important. In 2021, Heydari described the Army Ground Forces’ participation in suppressing the November 2019 protests as one of its “proud” missions. During the 2022 uprising, he referred to protesters as “flies.” The significance is greater than the ugliness of the language. Iran’s regular military, the Artesh, has traditionally been distinguished from the more ideological Guard. When a senior regular-army commander treats the suppression of domestic unrest as an honorable military responsibility, the boundary between defending Iran and defending the regime becomes dangerously faint.
This is the central political problem in Tehran today. A nation and the regime governing it are not the same thing. Governments can change without countries disappearing. Leaders can leave office without states collapsing. Policies can be abandoned without national identity being destroyed. Authoritarian rulers, however, have a powerful incentive to erase those distinctions. Their survival becomes synonymous with national survival; criticism becomes subversion; opposition becomes conspiracy; protest becomes a security threat.
Ahmad Vahidi’s elevation to command the Guard reflects the external dimension of this security mentality. His career runs through intelligence work and the external operations apparatus that developed into the Quds Force. Argentine prosecutors have accused Vahidi of involvement in the 1994 bombing of the Argentine Israelite Mutual Association Jewish community center in Buenos Aires, which killed 85 people, and Interpol issued a Red Notice concerning him in connection with the investigation. These remain accusations, not a criminal conviction. But the political significance of his appointment is unmistakable: At a moment of acute vulnerability, Tehran has placed a veteran of intelligence, asymmetric warfare, and extraterritorial security at the head of its most powerful revolutionary military institution.
Hossein Taeb’s return to command the Basij exposes the domestic side of the same equation. Taeb has moved through the Guard, the Ministry of Intelligence, counterintelligence, and the senior ranks of the Guards’ intelligence apparatus. The U.S. sanctioned him in 2010 for serious human-rights abuses, while the European Union subsequently imposed restrictive measures connected to serious violations of Iranian citizens’ rights.
His appointment matters especially because of what the Basij represents. It is not merely a military reserve. It is woven into Iranian universities, workplaces, neighborhoods, and public institutions, serving as a network for ideological mobilization, surveillance, recruitment, intimidation, and the suppression of unrest. Returning an experienced intelligence operator to its command suggests that the regime increasingly regards Iranian society itself as a security theater.
This is where the foreign and domestic dimensions of Tehran’s crisis converge. Military setbacks can damage the regime’s aura of invulnerability. Intelligence penetration can expose elite weakness. Economic deterioration can transform private anger into public unrest. Public unrest then produces more surveillance and repression, which widens the distance between the government and society. A regime organized around permanent insecurity can eventually become dependent on the very crisis it claims to be defending the country against.
The result is a dangerous cycle. Every state requires coercive power, but coercion and legitimacy are not interchangeable. Repression can compel obedience; it cannot manufacture consent. The more an authoritarian regime fears society, the more it expands mechanisms of control. The more intrusive those mechanisms become, the more alienated society becomes. And the greater the alienation, the more rulers perceive their own citizens as a threat.
The Islamic Republic’s resilience should nevertheless not be underestimated. It has absorbed significant military and intelligence shocks, replaced commanders, and preserved its institutional chain of command. But resilience is not the same as renewal. Again and again, Tehran reaches back into the same aging revolutionary-security generation for men considered sufficiently experienced, ideologically reliable, and politically trustworthy. The regime can fill empty chairs, but the circle of people trusted to occupy them appears increasingly narrow.
That is both a strength and a weakness. The Islamic Republic retains institutions capable of surviving serious shocks, but after nearly half a century, it remains dependent on veterans whose political identities were forged in revolution, war, intelligence operations, and internal repression. A political order confident in its future produces successors. An insecure one summons the guardians of its past.
For U.S. policymakers, the implication is important. Washington should judge Tehran less by the novelty of the names appearing at the top than by the institutions, doctrines, and threat perceptions those individuals represent. A new supreme leader does not necessarily mean a new regime, and a reshuffled command structure does not necessarily signal moderation. Personnel can change while the underlying architecture of power remains intact.
This does not mean the Islamic Republic is invulnerable. On the contrary, the appointments themselves suggest that its leadership recognizes the convergence of serious pressures: foreign military threats, intelligence penetration, economic weakness, public discontent, and uncertainty about the durability of the new leadership. But systems under such pressure do not necessarily liberalize. Some become more coercive precisely because they are weaker. That may be what is happening in Iran.
For the Iranian people, the tragedy is profound. Iran possesses a highly educated population, immense human and economic potential, an extraordinary global diaspora, and generations seeking dignity, prosperity, and a normal relationship with the world. Yet when the country needs economic recovery, institutional modernization, and political reconciliation, its rulers are once again entrusting its future to men shaped by intelligence operations, ideological warfare, surveillance, and repression.
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The deepest divide in Iran is therefore no longer simply between reformers and hard-liners, or even between the government and its foreign enemies. It is between the interests of a nation and the survival instincts of the regime governing it.
Mojtaba Khamenei’s emerging security order makes one reality unmistakable: the regime in Tehran has not changed. Contrary to President Donald Trump’s claim of regime change, matters may have grown worse. Veterans of the revolutionary-security establishment — drawn from institutions that have spent nearly five decades confronting the U.S. and that Washington has held responsible for attacks that killed American service members — are again rising to power. The faces at the top have changed, but the regime, its ideology, and its enemies have not. Tehran is not building something new; it is restoring the old order with some of its most hardened and notorious guardians.
Erfan Fard is a counterterrorism analyst and Middle East studies researcher based in Washington, with a particular focus on Iran, Islamic terrorism, and ethnic conflicts in the region.