Humiliation and Transformation: The Islamic Republic After the 12-Day War October 2025
Saeid Golkar
The 12-Day War between Iran and Israel in June 2025 exposed critical weaknesses in the Islamic Republic’s military, strategic, and ideological frameworks, marking a turning point for the regime. The Iranian government’s failure to achieve its political and military objectives undermined the regime’s credibility, revealed the limits of its deterrence, and intensified internal debates about its future. This paper examines the war’s causes, conduct, and consequences, analyzing its impact on Iran’s governance, ideology, and regional standing. This report argues that the conflict accelerated the regime’s loss of strategic coherence, prompting increased repression, a nationalist pivot, and institutional restructuring, while leaving Iran vulnerable to future crises.
Historical Trajectory to the Twelve-Day War The 12-Day War transformed a 45-year proxy struggle into direct confrontation. For more than four decades, Iran and Israel had been locked in a rivalry defined less by territorial disputes than by ideology and strategic competition. Since the 1979 Islamic Revolution, the Islamic Republic has built much of its identity and legitimacy on opposition to Israel, supporting the Palestinian cause, backing armed groups such as Hezbollah and Hamas, and vowing to eliminate the “Zionist regime.” Israel, in turn, sought to contain Iran’s regional influence and nuclear ambitions through covert operations, targeted assassinations, and strikes against Iranian assets across the Middle East. October 7, 2023, marked a turning point in the relationship. The Islamic Republic’s support for Hamas, Hezbollah, and proxies shifted the conflict from a shadow war to direct escalation. Israel responded in April 2024 with an attack on Iran’s Damascus consulate, killing Islamic Revolutionary Guards Corps (IRGC) commanders. The Iranian government retaliated with Operation True Promise I, Iran’s first direct missile and drone strike on Israel, which was rebuffed mainly by Israeli defenses with US help.1 A cycle of retaliation followed: Israel assassinated Hezbollah’s Fuad Shukr, Hamas leader Ismail Haniyeh, and Hezbollah’s Hassan Nasrallah. These prompted Operation True Promise II in October 2024, a significant Iranian missile and drone 1 Uzi Rubin, “Operation ‘True Promise’: Iran’s Missile Attack on Israel,” BESA Center, June 18, 2024. https://besacenter.org/operation-true-promise-irans-missile-attack-on-israel/.
This report is part of the six part series Operation Rising Lion: A Military and Regional Perspective