The U.S. and Iran are blocking oil exports through the Strait of Hormuz as part of a conflict that began earlier this year [2].
This disruption threatens the global economy because the waterway is one of the most critical maritime chokepoints in the world. Any prolonged closure restricts the flow of energy to international markets, potentially increasing costs for consumers and industries worldwide.
The Strait of Hormuz is a narrow waterway located between the Iranian coast and the Omani island of Hormuz in the Persian Gulf [1]. Its width is only 21 miles, or 34 kilometers [1]. This geography provides Iran with significant strategic leverage, as the narrow passage allows the state to threaten or implement closures that impact a large share of global oil supplies [1].
According to the Associated Press, around a fifth of the world's traded oil typically flows through the strait every day [1]. The blockade affects not only Iran but other major regional exporters, including Saudi Arabia, Iraq, Kuwait, and the United Arab Emirates [1].
The current standoff is part of a broader conflict between the U.S. and Iran that emerged in early 2026 [2]. The severity of the situation was highlighted in February when an Iranian official said, "The Strait of Hormuz will remain closed; the entire Persian Gulf is our hunting ground" [3].
NPR said in April that both countries are now blocking oil exports through the critical passage [2]. The resulting economic hit is being felt across the rest of the world as energy shipments are stalled in the narrow corridor [2].
“Around a fifth of the world's traded oil typically flows through the Strait of Hormuz every day.”
The closure of the Strait of Hormuz transforms a regional geopolitical dispute into a global economic crisis. Because approximately 20% of the world's daily traded oil relies on this 21-mile passage, the blockade creates a supply shock that cannot be easily bypassed. This gives Iran significant leverage in negotiations but also risks escalating the military involvement of the U.S. and other oil-dependent nations to secure the waterway.
