Iranian Defense Doctrine

The military operations that unfolded over twelve days in June 2025 between Iran and Israel marked a sharp breakpoint in the trajectory of regional military balance. The confrontation resulted in a substantial erosion of Tehran’s military infrastructure and inflicted significant material losses. The depth of this operational failure was most evident in the near-total collapse of Iran’s integrated air-defence system, with confirmed intelligence assessments indicating that Israel succeeded in neutralising more than 80 surface-to-air missile batteries and destroying over 120 launch platforms. This effectively stripped Iranian airspace of its protective shield and imposed a state of absolute Israeli air superiority.   Amid this collapse, Tehran effectively lost its entire arsenal of the Russian-made S-300PMU2 (“S-300 PMU-2”) systems, which it had acquired in 2016 after protracted negotiations and at considerable financial cost. These systems were systematically destroyed between 2024 and 2025. Iran’s domestic air-defence industries, represented by the Bavar-373 and Khordad-15 systems, also demonstrated clear operational inadequacy when tested in a real combat environment.   This exposed a wide technological gap between Israel’s offensive capabilities and Iran’s defensive assets. The Iranian air-defence network failed to record the downing of a single manned Israeli fighter jet, and Iran’s ageing air force, reliant on pre-revolution legacy aircraft such as the F-14 Tomcat, the Phantom, and the Tiger, supplemented by 1990s-era MiG-29s, stood incapable of competing or deterring effectively.   This total inability to contest the battlespace not only underscored tactical failure but delivered a decisive blow to the strategic assumptions underpinning Iran’s defence doctrine for decades, particularly its reliance on “asymmetric missile deterrence” and hybrid layered-defence networks.   Confronted with a reality in which its missile capabilities were neutralised and its aerial shield dismantled, the Iranian leadership was compelled to adopt a “post-war reset” strategy, launching an urgent acquisition campaign aimed at closing the technological gap by turning eastward towards Russia and China to rebuild its lost deterrence.   The fundamental question that will shape the next phase in the Middle East remains: Can this “hybrid deterrence”, comprising domestic missiles alongside imported, only partially integrated weapon systems, endure against an adversary that has already demonstrated both the willingness and the capability to deliver devastating strikes deep inside Iran?