Satellite Imagery Confirms Iran’s Final Push to Deploy Su-35 Fighters at Hamadan Air Base

(DEFENCE SECURITY ASIA) — Recent high-resolution satellite imagery has laid bare what defence planners across the Middle East have quietly anticipated for more than a year: Iran has entered the final infrastructural phase of integrating Russia’s Su-35 multirole fighter into frontline service, with the near-completion of hardened aircraft shelters at Hamadan Air Base representing a decisive material commitment rather than a speculative procurement signal.

The imagery reveals a cluster of newly constructed, arched hardened aircraft shelters whose scale, geometry, and spatial configuration are unmistakably aligned with the basing requirements of large, twin-engine fourth-plus-generation fighters rather than the Islamic Republic of Iran Air Force’s ageing legacy fleet.

These reinforced shelters, each measuring approximately 25 by 30 metres, significantly exceed the dimensions necessary for Iran’s existing F-4 Phantom II inventory, thereby underscoring that the infrastructure has been purpose-built for the incoming Sukhoi Su-35, a platform whose physical footprint, maintenance envelope, and operational doctrine demand a fundamentally different basing philosophy.

More critically, the timing of the construction — accelerating from early foundational work in late 2024 to near-operational readiness by December 2025 — synchronises precisely with confirmed production milestones at Russia’s Komsomolsk-on-Amur Aircraft Plant, strongly indicating that Tehran is aligning base readiness with delivery schedules rather than post-hoc adaptation.

The convergence of satellite evidence, production timelines, and strategic geography points to an unavoidable conclusion: Hamadan Air Base is being prepared as the first operational home for at least one Iranian Su-35 squadron, marking the most consequential leap in Iranian airpower since the 1979 Islamic Revolution.

This infrastructural acceleration signals that Tehran now views the Su-35 not as a symbolic upgrade but as a survivable wartime asset expected to operate under the constant threat of pre-emptive precision strikes, electronic warfare, and sustained air campaigns by technologically superior adversaries.

The deliberate investment in hardened aircraft shelters ahead of airframe delivery reflects hard lessons drawn from recent conflicts in Ukraine and the Middle East, where exposed aircraft on open aprons were neutralised within hours of hostilities, effectively collapsing airpower before it could influence the battlespace.

By shaping Hamadan’s basing architecture specifically around the Su-35’s size, maintenance demands, and sortie-generation tempo, Iran is implicitly acknowledging a doctrinal shift from force preservation in peacetime to force endurance under high-intensity combat conditions.

This move also suggests that Tehran anticipates the Su-35 to play a central role in its early-warning, interception, and deterrence posture, rather than being relegated to rear-area defence or ceremonial deployments intended primarily for strategic signalling.

Taken together, the satellite-revealed infrastructure, synchronised timelines, and tailored basing design confirm that Iran’s Su-35 programme has crossed the critical threshold from political intent to irreversible military implementation.

Hamadan Air Base: Geography, Survivability, and Strategic Depth

Formally designated the 3rd Tactical Air Base, Hamadan Air Base occupies a uniquely strategic position approximately 47 kilometres north of Hamadan city, embedded within western Iran’s Zagros foothills and positioned to project airpower across multiple critical axes simultaneously.

From Hamadan, combat aircraft can rapidly cover Tehran, Iran’s central nuclear infrastructure belt including Natanz and Fordow, and western approach corridors vulnerable to potential Israeli or NATO-aligned Turkish air operations, giving the base outsized strategic relevance relative to its footprint.

The base’s elevation confers meaningful performance advantages in hot-and-high operating conditions, while surrounding mountainous terrain complicates targeting solutions for adversaries seeking to employ stand-off precision-guided munitions, cruise missiles, or low-observable strike packages.

The newly constructed hardened aircraft shelters dramatically elevate Hamadan’s survivability profile, with reinforced concrete thickness and blast-resistant design features specifically optimised to resist bunker-busting munitions and mitigate the effects of near-miss penetrator strikes.

Satellite imagery indicates that the shelter complex spans roughly 0.2 square kilometres, with access taxiways, revetments, and dispersal spacing suggesting a doctrinal emphasis on aircraft survivability under sustained attack rather than peacetime convenience.

This architectural approach mirrors lessons drawn from recent conflicts in Ukraine, Gaza, and Syria, where concentrated air assets without hardened protection proved catastrophically vulnerable during the opening phases of high-intensity conflict.

By investing heavily in hardened infrastructure ahead of aircraft arrival, Iran is signalling that it expects the Su-35 not merely to exist as a prestige platform, but to survive and operate under sustained combat pressure.

The Su-35 Deal: From Speculation to Strategic Reality

The basing preparations at Hamadan cannot be separated from the broader geopolitical transaction that has reshaped Iran-Russia defence cooperation since 2023, culminating in a confirmed agreement valued at approximately €6 billion, equivalent to roughly US$6.5 billion or RM30.7 billion.

This agreement covers up to 48 Su-35 multirole fighters, with production of the first tranche of 16 aircraft already underway and deliveries scheduled to commence in 2026, extending through 2027.

Crucially, Iran has secured provisions for local assembly, a clause that fundamentally alters the long-term strategic impact of the deal by enabling Tehran to bypass sanctions, build domestic sustainment capacity, and potentially manufacture over 100 aircraft across the next decade.

“This collaboration represents a strategic shift,” defence observers have noted, emphasising that local production transforms Iran from a sanctioned end-user into a quasi-sovereign aerospace producer operating outside Western control mechanisms.

The roots of the deal trace directly to Egypt’s withdrawal from a similar Su-35 purchase under CAATSA pressure, leaving a completed production line suddenly without a buyer and presenting Moscow with a geopolitical opportunity rather than a liability.

In parallel, Tehran’s large-scale provision of Shahed-136 loitering munitions and ballistic missiles to Russia for use in Ukraine created a quid pro quo dynamic that redefined bilateral relations from transactional to strategically interdependent.

“Iran’s support to Russia has been instrumental,” analysts have observed, framing the Su-35 transfer as payment not merely in aircraft, but in strategic alignment against Western pressure.

By late 2025, the convergence of confirmed production, visible base preparations, and operational planning pushed the programme decisively beyond the realm of conjecture, making the Su-35’s Iranian service entry a matter of timing rather than intent.

Why the Su-35 Changes Iran’s Airpower Equation

The arrival of the Su-35 represents a discontinuous leap for an air force that has struggled for decades under embargo conditions, relying on aircraft whose technological relevance peaked during the Cold War.

Iran’s current frontline inventory remains dominated by F-4 Phantoms, F-14 Tomcats, F-5 Tigers, limited Mirage F1s, and Chinese-origin J-7s, many of which suffer from chronic availability and maintenance constraints.

The Su-35, by contrast, offers a quantum improvement in range, situational awareness, lethality, and survivability, transforming not just Iran’s air-to-air capability but its broader deterrence posture.

With a combat radius exceeding 2,000 kilometres, the Su-35 enables sustained operations across the Persian Gulf, Strait of Hormuz, Levant, and potentially into the Eastern Mediterranean, fundamentally expanding Iran’s operational envelope.

Its Irbis-E PESA radar, capable of detecting targets at ranges approaching 400 kilometres, dramatically outclasses the sensors on most regional fourth-generation fighters and provides early-engagement capability against high-value assets.

Complementing this are L-band radar arrays embedded in the wing roots, optimised for detecting low-observable targets and enhancing electronic warfare resilience in contested electromagnetic environments.

The aircraft’s three-dimensional thrust-vectoring engines confer extreme supermaneuverability, allowing the Su-35 to dominate within-visual-range engagements and survive missile-rich environments where kinetic evasion becomes decisive.

Its weapons suite, anchored by the R-37M hypersonic air-to-air missile, introduces a credible 400-kilometre engagement threat against airborne early warning aircraft, tankers, and command platforms critical to Western air operations.

“The Su-35 is a game-changer for Iran,” analysts have stated, describing it as a force multiplier capable of networking with older aircraft and extending their lethality via data-linked targeting.

Operational Logic: Why Hamadan Makes Sense

Basing Su-35s at Hamadan allows Iran to exploit the platform’s strengths while mitigating its vulnerabilities, particularly during the opening phases of a conflict with a technologically superior adversary.

From Hamadan, Su-35s can rapidly intercept incoming strike packages targeting Tehran or nuclear facilities, while remaining within protected airspace layered by surface-to-air missile systems.

The base’s western orientation positions Iranian fighters to contest Israeli flight paths, complicate mid-course refuelling operations, and threaten high-value support assets operating over regional airspace.

In a crisis scenario, Su-35s operating from Hamadan could loiter near the Strait of Hormuz, imposing air-sea denial effects that amplify Iran’s asymmetric maritime strategy.

Analysts also anticipate a dispersal doctrine, with Hamadan serving as a primary node complemented by underground facilities such as the Eagle 44 base, which previously showcased Su-35 mock-ups during its unveiling.

This approach mirrors Russian and Chinese survivability strategies, prioritising mobility, redundancy, and concealment over static defence.

Regional and Global Implications of Iran’s Su-35 Integration

The imminent deployment of Su-35s at Hamadan reverberates far beyond Iranian borders, recalibrating threat perceptions across the Middle East and challenging long-standing assumptions about air superiority.

Israel, whose operational doctrine relies on uncontested air dominance, now faces a more complex environment where standoff operations carry higher risk and deeper strike planning becomes unavoidable.

“The delivery of Su-35 fighter jets… has altered the cost-benefit analysis for Israel,” experts have noted, highlighting how even limited numbers can complicate operational calculus.

Gulf states operating F-35s, Eurofighters, and advanced F-15 variants must now factor Iranian long-range intercept capability into their own defensive planning.

For Russia, the deal provides financial relief and geopolitical leverage, generating over US$6.5 billion (RM30.7 billion) while cementing Iran as a strategic partner in defiance of Western sanctions.

“Selling the Su-35 fighters is a way for the Kremlin to maintain good relations with its Iranian counterparts,” analysts have observed, framing the transaction as a strategic hedge against isolation.

Infrastructure as Strategic Declaration

The hardened shelters rising at Hamadan Air Base are more than concrete and steel; they are a declaration of intent embedded in satellite-visible reality.

Iran is no longer merely aspiring to modern airpower — it is structurally committing to it.

With Su-35 deliveries approaching, pilot training underway, and infrastructure nearing readiness, Tehran is positioning itself to contest airspace, deter adversaries, and project power in ways unimaginable just a decade ago.

As defence planners across the region scrutinise each new satellite pass, one reality is now undeniable: Iran’s Su-35 era is no longer hypothetical — it is imminent. — DEFENCE SECURITY ASIA