Long before oil made the strait synonymous with geopolitical tension, it served as the gateway to one of history's richest trade networks. A first-century mariner's guide, the Periplus of the Erythraean Sea, described the opening to the Persian Gulf without naming it. Arab and Persian merchants traded pearls, dates, and spices through these waters for centuries. The name itself may derive from the Greek word hormos, meaning cove or bay, or from the Kingdom of Hormuz, whose rulers controlled both shores of the strait from their island capital. Babur, founder of the Mughal Empire, noted in his memoirs how almonds had to be carried from distant Ferghana in Central Asia all the way to Hormuz just to reach a market -- a testament to the strait's role as the only door between the Gulf's hinterlands and the wider trading world.

The strait's modern significance is measured in barrels per day. During 2023 to 2025, roughly 20 percent of the world's liquefied natural gas and 25 percent of all seaborne oil passed through these waters annually. The strait is about 104 miles long, with its width varying from roughly 21 to 60 miles. Shipping follows a Traffic Separation Scheme established by the International Maritime Organization: inbound vessels use one lane, outbound another, with a buffer zone between. Despite decades of regional conflict, including the Iran-Iraq War, Gulf War, and various standoffs, the strait has never been closed. Iran has periodically threatened closure, most recently during tensions over its nuclear program, but the economic consequences would be catastrophic for all parties, including Iran itself. The strategic calculation has always held: the strait stays open because everyone needs it open.

Tensions along the strait have a long history of erupting into direct confrontation. During the Iran-Iraq War in the 1980s, both sides attacked tankers in what became known as the Tanker War. The United States Navy began escorting reflagged Kuwaiti tankers through the strait in 1987. In July 1988, the USS Vincennes shot down Iran Air Flight 655, killing all 290 people aboard, after misidentifying the civilian Airbus A300 as an attacking fighter jet. The incident remains one of the most controversial episodes in American naval history. More recently, Iran seized the British-flagged oil tanker Stena Impero in 2019, and the strait has seen repeated incidents involving drones, mines, and naval confrontations. Despite all this, commercial shipping continues. The economic stakes are simply too high for any party to permanently disrupt traffic.

From altitude, the Strait of Hormuz reveals itself as a geographic inevitability -- the only gap in a nearly continuous wall of land separating the Persian Gulf from the Indian Ocean. The Iranian coast runs rugged and mountainous to the north, while the Musandam Peninsula juts into the strait like a fist from the south, its deep fjords and sheer cliffs among the most dramatic coastal landforms in the Middle East. Islands dot the passage: Hormuz Island with its surreal red beaches, Qeshm with its mangrove forests, and Larak further east. At the narrowest point, you can see both coasts simultaneously. Below, the orderly procession of supertankers traces the shipping lanes, their wakes white lines drawn on blue water. It is a view that makes abstract geopolitics suddenly, viscerally concrete.