TEHRAN, July 6 — For four years, Admiral Hossein Khanzadi was the man at the helm of Iran’s navy, steering a course that kept the Strait of Hormuz in a state of constant tension. He commanded the Islamic Republic of Iran Navy from 2017 to 2021, a period that saw the waterway become a flashpoint for confrontation with the United States. For the families of American sailors serving in the U.S. Fifth Fleet, Khanzadi’s name meant something specific.
It meant the threat of a sudden, unpredictable encounter in narrow shipping lanes. The admiral oversaw a naval doctrine built on asymmetric warfare — the use of small, fast boats and naval mines designed to offset America’s conventional superiority.
The human side of this strategy played out in real time. In 2019, under Khanzadi’s command, Iranian forces seized the Stena Impero, a British-flagged tanker transiting the Strait of Hormuz. The crew was detained, and the incident sent a shockwave through the international shipping community.
Families of mariners held their breath. Khanzadi was a vocal figure.
He frequently emphasized Iran’s ability to close the Strait of Hormuz if the country felt threatened, though he never fully executed that threat. The strait is a vital artery for global oil supplies, and the mere suggestion of its closure sends tremors through energy markets. It affects what families pay at the pump, what businesses pay for transport, and what patients pay for medical supplies shipped from abroad.
The U.S. Treasury Department has sanctioned Khanzadi for his role in Iran’s destabilizing activities. Those sanctions are a formal recognition of what the Fifth Fleet experienced daily: near-collisions in the strait, aggressive maneuvers, and a constant game of chicken on the water. For the men and women aboard American destroyers and patrol craft, each transit of the strait carried an extra layer of risk.
Behind the breakthrough of Iran’s naval ambitions was a man who understood how to make a small navy feel like a big threat. Khanzadi was replaced by Admiral Shahram Irani in 2021, but the doctrine he built remains in place.
What this means for the region now, as of July 2026, is a lingering question. The ships are still there. The fast boats are still in the water.
And the Strait of Hormuz remains the most strategically important chokepoint on the planet, watched closely by every navy with a stake in the free flow of commerce.
