Following the confirmed death of Supreme Leader Ayatollah Ali Khamenei and other senior officials in a US-Israeli assault on Saturday, Iran has launched retaliatory strikes against Israel and US military assets across the Gulf. The Islamic Revolutionary Guard Corps (IRGC) vowed revenge, initiating what it termed "the heaviest offensive operations in the history of the armed forces." Iran's army chief pledged continued defense, with claims of fighter jets bombing US bases. Analysts note a shift in Iran's military strategy since the June 2025 war, moving towards a more aggressive posture focused on survival, characterized by asymmetric endurance, regional saturation, proxy warfare, and threats to close the Strait of Hormuz. This recalibrated strategy involves calibrated, episodic bursts of aggression, utilizing drones and ballistic missiles, while facing constraints from damaged capabilities and internal instability.