U.S. Intelligence Warns Iran Nuclear Ambitions May Be Accelerating Under Mojtaba Khamenei
U.S. intelligence assessments indicate Iran nuclear ambitions could be rising under new supreme leader Mojtaba Khamenei as Tehran relocates centrifuges and fortifies underground sites.
The latest U.S. intelligence appraisals conclude that Iran nuclear ambitions may be shifting under the authority of Mojtaba Khamenei, who succeeded his father amid wartime upheaval. American officials say the new leadership appears more inclined toward developing advanced weapon capabilities, even as Tehran has not publicly declared an intent to build a bomb. Moves to protect and disperse nuclear equipment, coupled with deeper underground facilities, have heightened concern in Washington and across the Gulf.
U.S. Intelligence Sees Shift in Tehran’s Nuclear Calculus
U.S. agencies, drawing on pre-war intercepts and other sources, assess that Mojtaba Khamenei does not share the same reluctance toward a weapon that characterised his predecessor. Officials caution that much of the intelligence about his views predates the conflict and his reported wartime injuries, which have limited his public appearances and communications. Still, analysts say the new leadership and harder-line elements now in key positions have greater interest in pursuing a strategic nuclear capability.
American analysts also say the current government has been more assertive in regional operations, including tighter control over the Strait of Hormuz and a fractious stance in diplomacy. That posture, combined with U.S. and Israeli strikes on Iranian sites last year, has reinforced fears that Tehran may see a stronger incentive to acquire a deterrent. U.S. policymakers are weighing those assessments as they consider potential military and diplomatic responses.
Movement of Centrifuges to Pickaxe Mountain
U.S. officials report that Iran has moved at least some centrifuges to a heavily fortified underground complex referred to by U.S. intelligence as Pickaxe Mountain. Satellite imagery and allied intelligence have tracked activity around entrances to deep tunnel networks, prompting concerns that Tehran is dispersing key equipment to reduce vulnerability. The relocation is viewed by analysts primarily as a protective measure to preserve assets rather than as an immediate restart of large-scale enrichment.
The Pickaxe complex is believed to be much deeper than sites struck last year, placing it beyond the reach of the most powerful conventional U.S. munitions. That depth, combined with extensive tunnelling, complicates any potential air campaign and raises the prospect that only a ground raid could reliably neutralise facilities. Iran has reportedly moved security forces toward the site to deter such a commando-style assault, increasing the risks for any operation against it.
Damage and Setbacks from 2025 Strikes
In June 2025, U.S. military strikes targeted three Iranian nuclear facilities, with B-2 bombers and Tomahawk missiles used against Fordo, Natanz, and Isfahan. Initial U.S. statements portrayed the operation as highly destructive, but subsequent assessments suggested the strikes set Iran’s program back by months rather than eliminating it. Analysts say the damage slowed visible enrichment activity and prompted Tehran to conceal or move equipment, but the underlying stockpiles and technical know-how remain largely intact.
U.S. officials argue the strikes bought time and constrained overt programme advances, yet they also acknowledge unintended effects. The attacks appear to have accelerated Iran’s efforts to harden and decentralise sensitive infrastructure, a response that may make future non-proliferation measures more difficult. This dynamic has complicated both military planning and diplomatic options aimed at preventing weaponisation.
Religious Ruling, Policy Differences, and Leadership Influence
Ayatollah Ali Khamenei, the previous supreme leader, issued a fatwa in 2005 prohibiting the use of nuclear weapons, a stance that shaped much of Tehran’s public messaging on proliferation. U.S. analysts emphasise that the fatwa constrained use but did not categorically prevent development or steps toward weaponisation, and internal hardliners long pushed for rapid breakout potential. By contrast, Mojtaba Khamenei is assessed to place greater emphasis on a strategic, possibly thermonuclear, capability that could be miniaturised for delivery at longer ranges.
Intelligence officials also note a difference in personal authority: Mojtaba Khamenei is judged to lack the decades-long sway his father commanded, yet he presides over a government staffed with figures more willing to pursue aggressive defence and deterrent options. That institutional shift matters as much as doctrinal change, because policy outcomes now depend on a coalition of hardline commanders and technocrats. U.S. agencies say they remain watchful for changes in posture that would signal a transition from preservation to active weaponisation.
Technical Pathways and Weaponisation Concerns
U.S. assessments distinguish between crude, short-term weapon options and more sophisticated thermonuclear ambitions. During the previous administration, Tehran explored simpler bomb designs that could serve as a deterrent yet remain difficult to deliver. The new leadership, according to analysts, appears more focused on advanced warhead development that would require greater technical investment but offer strategic parity if successfully miniaturised for missiles.
Experts warn that moving centrifuges and hiding infrastructure buys time but does not erase the underlying components needed for a bomb, especially enriched uranium stockpiles. Technical hurdles remain significant, including weapon design, testing constraints, and delivery system integration, but those barriers can be narrowed with sustained intent and resources. U.S. planners say assessing intent is therefore as crucial as tracking physical movements.
Regional Security and Policy Implications
The intelligence findings have immediate implications for Gulf security and for partners considering civil nuclear assistance or enrichment facilities. Analysts suggest that U.S. threats or strikes intended to halt development can have the perverse effect of incentivising Tehran to speed weaponisation as a deterrent. Observers in Washington and Gulf capitals are debating whether current pressures make proliferation more, rather than less, likely.
Some defence analysts argue that the prospect of a more determined Iranian programme will push regional states to diversify their security and nuclear options, raising the prospect of broader proliferation dynamics. Diplomats caution that robust surveillance, sustained diplomacy, and multilateral pressure will be necessary to manage risks without further destabilising the region.
The intelligence assessments underline a fraught policy choice: whether to intensify military pressure on Iran to prevent a possible weapons pathway, or to pursue renewed diplomatic channels to constrain programmatic advances while reducing incentives for weaponisation.