Trump Says He Has Replacement in Mind for Iran's Supreme Leader

In the chaotic aftermath of the assassination of Iran's Supreme Leader Ali Khamenei, President Donald Trump made an extraordinary claim: that he must personally approve whoever succeeds the slain ayatollah. Iran's answer came swiftly — and defiantly. On March 8, the Assembly of Experts named Mojtaba Khamenei, the 56-year-old son of the assassinated leader, as the Islamic Republic's third supreme leader, a move that signals continuity, hardline resolve, and a pointed rebuke to Washington's demands [1][2].

Trump's response was blunt. "I think they made a big mistake," the president told reporters. "I'm not happy about it" [3].

The confrontation over Iran's leadership succession has become a defining flashpoint in a broader crisis that began with joint U.S.-Israeli military strikes on Iran on February 28, 2026, and has since spiraled into the most significant military engagement between the United States and a sovereign nation since the 2003 invasion of Iraq.

From Diplomacy to War: The Collapse of Nuclear Talks

The crisis did not begin with bombs. For months, the Trump administration had pursued a dual-track approach to Iran — combining maximum-pressure sanctions with backchannel diplomacy on the country's nuclear program.

On February 6, 2026, the United States and Iran held indirect talks in Muscat, Oman, mediated by Oman's foreign minister Badr bin Hamad Al Busaidi. A second round followed in Geneva in late February [4]. By February 27, Oman's foreign minister announced what he called a "breakthrough" — Iran had agreed in principle to never stockpile enriched uranium and to accept full verification by the International Atomic Energy Agency (IAEA) [5].

But Trump was "not thrilled" with the framework, according to NPR, because it did not address his broader demands: the dismantlement of Iran's ballistic missile arsenal and the cessation of support for regional proxies including Hezbollah, Hamas, and the Houthis [6].

Less than 24 hours after the Omani mediators announced progress, the United States and Israel launched Operation "Epic Fury" — a massive joint air campaign targeting Iranian military installations, command centers, and senior leadership [7].

The Assassination of Ali Khamenei

The strikes of February 28, 2026 killed dozens of senior Iranian officials. Among them was Supreme Leader Ayatollah Ali Khamenei, who had ruled Iran for 36 years since succeeding Ayatollah Ruhollah Khomeini in 1989 [8].

Satellite imagery showed Khamenei's residence in Tehran severely damaged. In addition to the supreme leader, the strikes killed his daughter, son-in-law, three grandchildren, and daughter-in-law. His wife, Mansoureh Khojasteh Bagherzadeh, also died from injuries sustained in the attack [8].

The Iranian government confirmed Khamenei's death on March 1 and announced 40 days of mourning. The country's retaliation was immediate and sweeping — Iran launched missile and drone strikes against Israel, American military bases across the Middle East, and civilian targets, while also threatening maritime traffic in the Strait of Hormuz [7][9].

Trump's Extraordinary Demand

Even before Iran's Assembly of Experts convened to choose a successor, Trump staked his claim to influence the outcome.

In an exclusive interview with Axios on March 5, Trump said he needed to be "personally involved" in selecting Iran's next leader — just as he claimed to have been in Venezuela's political transition. "They are wasting their time. Khamenei's son is a lightweight. I have to be involved in the appointment, like with Delcy [Rodriguez] in Venezuela," Trump said [1].

Speaking to ABC News, the president escalated further: "He's going to have to get approval from us. If he doesn't get approval from us, he's not going to last long" [10].

Israel reinforced the threat. The Israeli military publicly warned that it would target any replacement for the late Ali Khamenei [11].

Mojtaba Khamenei: The Shadow Kingmaker Steps Into the Light

Iran's answer to Trump's demands was emphatic. On March 8, the Assembly of Experts — an 88-member body of senior clerics constitutionally charged with selecting the supreme leader — announced Mojtaba Khamenei as the country's new head of state [2].

The selection was neither smooth nor universally supported within Iran's political establishment. According to Iran International, the process was heavily influenced by the Islamic Revolutionary Guard Corps (IRGC), which pressured Assembly members to vote for Mojtaba beginning on March 3, just three days after his father's death [12]. Eight members boycotted the second session on March 5, citing "heavy pressure" by the IRGC and describing the atmosphere of the online proceedings as "unnatural" [12].

Despite the controversy, Mojtaba Khamenei's ascension followed a logic familiar to observers of Iranian politics. The 56-year-old cleric has never held a formal government position but has long wielded enormous behind-the-scenes power. Born in 1969 in the holy city of Mashhad, he served in the IRGC's Habib Battalion during the Iran-Iraq War and subsequently developed deep ties within the security establishment [13][14].

Leaked IRGC documents published by Iran International in 2023 revealed that Mojtaba effectively controlled the Basij paramilitary force and exercised significant influence over personnel decisions in Iran's intelligence apparatus [13]. Analysts from the Atlantic Council have described him as among the most hardline of Iran's principlist faction, with close ties to "some of the most ideologically extremist clerics" [14].

Perhaps most alarming to Western policymakers, Mojtaba is widely seen as more favorable to developing an Iranian nuclear weapons program than his father — reportedly opposing Ali Khamenei's fatwa (religious decree) against nuclear weapons [14].

Source: FRED / U.S. Energy Information Administration

Data as of Mar 4, 2026CSV

Oil Markets in Turmoil

The Iran conflict has sent shockwaves through global energy markets. In the weeks before the strikes, WTI crude oil traded in a range of $57–$67 per barrel. By March 2 — the last data point available from FRED — prices had already jumped to $71.13 [15].

But the worst was yet to come. By March 9, Brent crude surged past $119 a barrel, the first time oil had topped $100 since Russia's 2022 invasion of Ukraine [16]. Iran's targeting of shipping in the Strait of Hormuz — through which roughly 20 percent of the world's crude passes daily — has led to an unprecedented halt in oil flows through the waterway [17].

The cascading effects have been severe. Iraq and Kuwait have begun shutting in production, with Iraq's output collapsing by 60 percent [17]. In the United States, the average price of regular gasoline rose to $3.48 per gallon by early March, up nearly 50 cents from a week earlier [18]. Analysts warn that even a quick resolution to the conflict could leave consumers facing weeks or months of elevated fuel prices [17].

A World Divided: International Reactions

The appointment of Mojtaba Khamenei has divided the international community along predictable lines.

U.S. Senator Lindsey Graham said the new supreme leader was "not the change we're looking for," adding ominously: "I believe it's just a matter of time before he meets the same fate as that of his father" [11]. Israel's Foreign Ministry called Mojtaba a "tyrant" who would continue what it described as the Iranian "regime's brutality" [11].

On the other side, Russian President Vladimir Putin pledged "unwavering support" to Iran, saying "Russia has been and will remain a reliable partner" [11]. China warned against any targeting of the new supreme leader [11]. Iraq's Prime Minister Mohammed Shia al-Sudani congratulated Khamenei, while Yemen's Houthi leader Abdul-Malik al-Houthi called the appointment a "significant achievement in these exceptional circumstances" [11].

The Regime Change Question

Trump's insistence on approving Iran's next leader has crystallized what critics call the core contradiction of his Iran policy: a president who ran as "the peace candidate" in 2024 is now pursuing what amounts to regime change — the very outcome his campaign warned a Kamala Harris presidency would produce [19][20].

The administration's messaging has been inconsistent. Vice President JD Vance and Defense Secretary Pete Hegseth have publicly stated that regime change is not the goal of the military operation. Yet Trump has contradicted them on social media and in interviews, and his demand to approve Iran's leadership selection goes well beyond anything short of regime change [20].

CNN's analysis put it starkly: "Trump launches the regime-change effort in Iran that he pledged to avoid" [19].

Military experts have questioned the feasibility of Trump's approach. As analysts at the Bulletin of the Atomic Scientists noted, "You can damage buildings; you can damage the regime, but we don't have examples of when air power alone has achieved regime change" [21]. No country's government has ever been overthrown and replaced with a friendlier one through air power alone [21].

The Soufan Center, a nonpartisan security think tank, warned that the United States "struggles with an exit strategy" as Iran consolidates under new leadership while the war continues [22].

What Comes Next

As of March 10, the situation remains deeply volatile. Iran has sent indirect signals through intelligence channels indicating a willingness to discuss ending the war, according to CNN, but U.S. officials say no active negotiations are underway and that meaningful "off-ramps" are unlikely in the near term [23].

Trump has described the conflict as a "short-term excursion" but has also said it will not end until the enemy is "decisively defeated" — statements that some analysts see as irreconcilable [24].

The selection of Mojtaba Khamenei — a wartime leader with deep IRGC ties and a reported openness to nuclear weaponization — suggests Iran is digging in for a prolonged confrontation. His appointment represents not the leadership change Washington sought, but rather a hardening of the very system the strikes were designed to weaken.

For critics of the operation, the outcome vindicates a longstanding warning of Middle East policy scholars: that decapitation strikes against authoritarian regimes rarely produce the political transformations their architects envision. Instead, they tend to elevate the most hardline successors available — figures whose legitimacy is forged precisely in opposition to external aggression.

Trump wanted to choose Iran's next leader. Iran chose for itself. The question now is whether either side can find a way to end a war that neither may have fully anticipated.