TEHRAN, July 12 — Iran’s Supreme Leader Ali Khamenei, who held final authority over all state matters including the military and foreign policy since 1989, has died. His tenure, which began after succeeding Ruhollah Khomeini, saw Iran’s deepening isolation from the West and escalating tensions with the United States. Khamenei, born July 17, 1939, in Mashhad, Iran, served as the country’s president from 1981 to 1989 before assuming the role of Supreme Leader.
In that position, he wielded final authority over Iran’s military and foreign policy — including decisions about the Strait of Hormuz, a vital waterway for global oil shipments. The practical upshot for the region is significant uncertainty.
Khamenei had supported the Islamic Revolutionary Guard Corps’ threats to close the Strait of Hormuz, stating in 2019 that “the Strait of Hormuz is a vital waterway for Iran, and we will defend it.” His decisions on the strait were influenced by Iran’s nuclear program and the sanctions regime. He had been under U.S. sanctions since 2019, designated for human rights abuses and support for terrorism.
A hardline legacy on nuclear diplomacy
Khamenei opposed the Joint Comprehensive Plan of Action, the 2015 nuclear deal, calling it “flawed.” His opposition to the JCPOA shaped Iran’s nuclear trajectory and its relationship with Western powers throughout his leadership. The practical consequence for ordinary observers: the nuclear deal that had offered a pathway for Iran’s economic integration with the West never gained traction under his watch. Think of it like a ship that refuses to dock.
Khamenei kept Iran on a course of confrontation rather than engagement, and that direction defined his entire 37-year tenure as Supreme Leader.
What comes next
The succession question now looms. Iran’s Assembly of Experts, the body responsible for selecting a new Supreme Leader, will determine who fills the vacuum. The new leader’s stance on the Strait of Hormuz, Iran’s nuclear program, and relations with the U.S. will shape regional stability for years to come.
For American policymakers, the change at the top of Iran’s hierarchy presents both risk and potential opening. The U.S. sanctions that targeted Khamenei personally remain in place, and Iran’s broader isolation from the West was a hallmark of his rule.
Whether his successor pursues a different path — or doubles down on the same confrontational approach — is the central question facing the region.
