Greater Tunb is a strategically significant, 4-square-mile island located in the eastern Persian Gulf, situated near the narrow entrance of the Strait of Hormuz. Because of its proximity to the world’s most critical oil transit chokepoint, the island holds outsized geopolitical importance, serving as a vantage point for monitoring maritime traffic and projecting military power into the vital shipping lanes used by global energy markets.
Historical Sovereignty and the 1971 Occupation
The status of Greater Tunb—along with its smaller neighbor, Lesser Tunb, and the island of Abu Musa—remains a subject of long-standing territorial dispute. While the islands are currently under the administration of the Islamic Republic of Iran, their sovereignty has been contested by the United Arab Emirates since the British withdrawal from the region in 1971. According to the U.S. Department of State, the UAE maintains a claim to the islands, asserting that they were illegally seized by Iranian forces on November 30, 1971.
Iran occupies the islands based on historical claims dating back to the Qajar dynasty. The presence of Iranian military infrastructure on Greater Tunb, including radar stations and potential missile batteries, allows Tehran to effectively oversee vessels traversing the Strait of Hormuz. International maritime analysts frequently cite the island’s location as a primary factor in regional security calculations, as any disruption to the strait—through which roughly 20% of the world’s total oil consumption passed as of 2022—would have immediate, global economic consequences, as documented by the U.S. Energy Information Administration.
Strategic Role in Regional Security
Greater Tunb serves as an early-warning outpost for the Iranian Islamic Revolutionary Guard Corps (IRGC) Navy. Its geographic coordinates place it roughly 20 kilometers south of the Iranian mainland and approximately 50 kilometers from the coast of the UAE. Because the island is positioned near the shipping lanes that tankers must navigate to enter or exit the Persian Gulf, it acts as a physical barrier and observation post for the narrow, deep-water channels essential for large-scale maritime transit.
The strategic utility of the island is not limited to observation. Military planners often categorize Greater Tunb as a “unsinkable aircraft carrier” due to its ability to host anti-ship cruise missiles and fast-attack craft. According to reports from the Center for Strategic and International Studies (CSIS), the militarization of these islands is a cornerstone of Iran’s “anti-access/area-denial” (A2/AD) strategy, designed to threaten foreign naval vessels and commercial shipping in the event of a broader regional conflict.
Geopolitical Implications of Recent Tensions
The island’s status has frequently factored into broader diplomatic tensions. Whenever frictions rise between Iran and the United States—or between Iran and its Gulf Arab neighbors—Greater Tunb is identified by analysts as a potential flashpoint. The island’s infrastructure provides the capability to launch asymmetric warfare tactics, including the deployment of swarming speedboats or the activation of shore-based artillery aimed at the strait’s narrowest navigation channels.
The international community, including the Gulf Cooperation Council (GCC), has repeatedly called for a peaceful resolution to the sovereignty dispute, often urging Iran to enter into direct negotiations or submit the matter to the International Court of Justice. However, Tehran maintains that its sovereignty over the island is non-negotiable and considers the territory a fundamental part of its national security perimeter. As noted by the Atlantic Council, the deadlock persists because the islands represent not just territorial pride for the UAE, but a critical tactical advantage for Iranian military planners who prioritize control over the Hormuz gateway.
Current Status and Monitoring
As of late 2024, Greater Tunb remains under strict Iranian military control with no civilian population present. Access to the island is restricted to personnel associated with the IRGC. While the island is often mentioned in reports regarding U.S. airstrikes or regional military posturing, it is essential to distinguish between localized military activity and the ongoing, decades-long diplomatic impasse regarding its legal ownership.
Readers interested in tracking regional maritime security developments should monitor official updates from the U.S. Naval Forces Central Command, which provides regular unclassified reports on transit patterns and security incidents within the Persian Gulf and the Strait of Hormuz. Official government filings and diplomatic statements from the UAE Ministry of Foreign Affairs continue to serve as the primary source for the evolving legal arguments surrounding the island’s status. We invite our readers to share their perspectives on the evolving security dynamics of the Persian Gulf in the comments section below.