Iran’s calibrated strikes in April and October 2024 were meant to signal deterrence, not war. Yet by revealing both the reach and the restraint of its missiles and drones, Tehran may have inadvertently provided Israeli planners with a roadmap for a far more devastating offensive.
In each 2024 attack, Iran launched dozens of missiles and swarms of drones at Israeli military facilities. Interceptors shot down the bulk of them, resulting in limited damage and few casualties. Observers characterized Tehran’s moves as measured—a demonstration of capability short of all-out conflict.
That restraint appears to have emboldened Israel. In June 2025, it mounted Operation Rising Lion, its largest strike on Iranian soil to date. Over 100 targets were hit, including nuclear research sites, Islamic Revolutionary Guard Corps infrastructure and the homes of senior IRGC commanders. Several high-ranking officers and nuclear scientists were killed—figures once considered beyond Israel’s reach. The precision and scope of the operation signaled a shift in doctrine: from managing Iran’s threat to seeking its dismantlement.
Iran did respond with missile barrages, inflicting deaths and injuries in Israel. But those ripostes fell short of changing the balance of power. Key nuclear facilities suffered setbacks, and the loss of top personnel weakened Iran’s deterrent posture. Civilian casualties from Israeli strikes stirred domestic unrest, constraining Tehran’s freedom to escalate further without risking political instability at home.
At stake is a central lesson: restraint can be read as weakness if not backed by credible follow-through. Iran’s limited 2024 responses were likely meant to avoid full-scale war while flashing its capabilities. Instead, Israel interpreted hesitation as a signal that Tehran would stop short of decisive retaliation. The result was a willingness to pay high costs in order to neutralize the perceived nuclear threat.
Predictability proved equally dangerous. By using similar missile types, flight paths and engagement windows in both April and October, Iran laid bare the contours of its retaliation playbook. Israeli intelligence could estimate interception rates, stockpile capacities and critical thresholds. This data gave Israeli strategists confidence that even a large-scale counterstrike could be absorbed.
The targeted killings of IRGC Commander Hossein Salami and leading nuclear scientists exposed glaring security flaws. Iran’s top brass lacked sanctuary; operational and counterintelligence protocols failed to conceal their locations. Tehran must urgently reassess protective measures, mobility patterns and information security.
Finally, the episode underscores that diplomacy without credible deterrence may invite coercion. Iran’s talks with the U.S. and European intermediaries over its nuclear program provided no shield when bombs began to fall. Future negotiations will require a more balanced approach—pairing dialogue with unpredictable, multilayered deterrent options, from cyberattacks and covert operations abroad to asymmetric strikes.
If Iran cannot recover its deterrent or mount a meaningful asymmetric response, a dangerous precedent will be set. Other regional actors—and great powers—will note that declared red lines can be crossed with impunity. Meanwhile, Israel’s success in June 2025 may harden a doctrine of preemption as policy rather than last resort. In this evolving calculus, the next escalation may hinge on who recalibrates deterrence first—and who dares to keep their hand concealed.