Iran Partially Closes Strait of Hormuz Amidst Nuclear Talks with U.S.
Iran temporarily closed parts of the Strait of Hormuz on Tuesday, February 17, 2026, citing security precautions related to military drills conducted by its Revolutionary Guard. This action coincides with ongoing nuclear negotiations between Iran and the United States in Geneva, raising geopolitical tensions in the region. It marks the first time Iran has shut portions of the vital waterway since January, when former U.S. President Donald Trump threatened military action against Tehran .
Strategic Importance of the Strait of Hormuz
The Strait of Hormuz is a crucial international waterway connecting crude producers in the Middle East to key global markets. Approximately 13 million barrels of crude oil transited the strait in 2025, representing roughly 31% of global seaborne crude flows . Its location between Oman and Iran makes it a significant choke point for global oil supplies.
Iran’s Rationale and Military Drills
Iranian state media reported the partial closure was enacted to ensure shipping safety during the Revolutionary Guard’s “Smart Control of the Strait of Hormuz” drill. The exercise aims to enhance Iran’s operational readiness and strengthen its deterrence capabilities . The move is widely interpreted as a demonstration of Iran’s power and influence in the Persian Gulf .
Progress in Nuclear Negotiations
Despite the heightened tensions, both the U.S. And Iran have indicated progress in the nuclear negotiations. Iranian Foreign Minister Abbas Araghchi stated that the two countries reached an understanding of “guiding principles” during the talks and . The U.S. Expects Iran to present detailed proposals within the next two weeks .
Market Reaction
Initial reactions in the oil market saw prices briefly rise, but they subsequently erased those gains as the nuclear talks concluded .
Recent Developments
Iran announced the temporary closure of the Strait of Hormuz on Tuesday for live fire drills, coinciding with the start of a new round of negotiations with the U.S. Over its nuclear program . The closure, attributed to “safety and maritime concerns,” occurred as Iran conducted military exercises .