Maritime Chokepoints and Freedom of Navigation
Maritime chokepoints are narrow sea passages through which a disproportionate share of global seaborne trade passes. Their strategic importance arises from their geographical concentration of traffic — a blockade or attack at a chokepoint has cascading effects on global supply chains, energy markets, and food security. The Strait of Hormuz is the world's most critical oil chokepoint.
- The Strait of Hormuz connects the Persian Gulf (containing the oil reserves of Saudi Arabia, Iraq, UAE, Kuwait, and Iran) to the Gulf of Oman and the Arabian Sea. At its narrowest navigable point, it is approximately 33 km wide.
- Under UNCLOS (United Nations Convention on the Law of the Sea), Article 38, all ships enjoy the right of "transit passage" through straits used for international navigation — a right that cannot be suspended by the bordering state.
- Iran has not ratified UNCLOS; however, the right of transit passage through the Strait of Hormuz is considered customary international law, binding on all states.
- Other major global chokepoints: Malacca Strait (Southeast Asia — 16 million b/d oil, 40% of global trade), Bab-el-Mandeb (Red Sea/Yemen — ~6 million b/d), Suez Canal, Panama Canal, Danish Straits.
- Iran's blockade and attacks on commercial vessels constitute violations of UNCLOS transit passage rights and potentially breach the UN Convention for the Suppression of Unlawful Acts Against the Safety of Maritime Navigation (SUA Convention, 1988).
● Tracked since March 11, 2026 · last seen May 03, 2026 · updates as the daily brief publishes
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