Since the 1979 Islamic Revolution, Iran has faced numerous challenges but has strengthened its internal stability and regional influence under Ayatollah Seyyed Ali Khamenei’s leadership since 1989. This article analyzes Khamenei’s impact on Iran’s power through strategic independence, military deterrence, and ideological cohesion. His leadership has emphasized political independence, cultural resilience, and a robust defense sector. Iran’s foreign policy has shifted towards regional assertiveness, fostering ties with groups in Lebanon, Syria, Iraq, and Yemen. The “resistance economy” initiative aims to combat sanctions and promote self-sufficiency. Overall, Khamenei’s era highlights Iran’s composite power amid ongoing challenges.