Iran decides to impose service fees on vessels transiting Strait of Hormuz

Iran's decision to impose service fees on vessels transiting the Strait of Hormuz marks a significant escalation in maritime geopolitics with far-reaching implications for global energy security and international law. The announcement by Ebrahim Rezaei, spokesperson of Iran's National Security Commission, comes against a backdrop of heightened tensions in the Persian Gulf region, where Iran has increasingly asserted its sovereignty over this critical waterway. Historically, the Strait of Hormuz — a narrow channel between Iran and Oman connecting the Persian Gulf to the Gulf of Oman and the Arabian Sea — has been governed by the principles of the United Nations Convention on the Law of the Sea (UNCLOS), to which Iran is a signatory (ratified in 1982, though not without reservations). Under UNCLOS Article 38, straits used for international navigation enjoy the regime of "transit passage," which guarantees freedom of navigation and overflight solely for the purpose of continuous and expeditious transit. Iran's imposition of fees for "maritime, environmental, and logistical provisions" appears to challenge this regime, potentially conflating sovereign rights in its territorial sea with obligations under international law. The strategic stakes are enormous: approximately 20% of global oil trade and nearly 30% of seaborne crude oil shipments pass through this chokepoint daily, including vital supplies for major Asian economies — China, India, Japan, and South Korea. For India, which imports over 85% of its crude oil and sources a significant portion from the Persian Gulf (historically Iraq, Saudi Arabia, UAE, and until 2019, Iran), any disruption or cost escalation directly impacts energy security, current account deficit, and inflation. The move also intersects with India's broader strategic interests, including the Chabahar Port development in Iran — a key gateway for Indian access to Afghanistan and Central Asia bypassing Pakistan — and its delicate balancing act between Western sanctions pressure and historical ties with Tehran. Key stakeholders include Iran, seeking to monetize its geographic leverage amid crippling US sanctions (reimposed post-2018 JCPOA withdrawal); Gulf Cooperation Council (GCC) states, particularly Saudi Arabia and UAE, vulnerable to supply disruptions; major oil importers like India, China, and the EU; and the United States, which maintains the Fifth Fleet in Bahrain to ensure freedom of navigation. The legal contestation centers on whether Iran's fees constitute a legitimate charge for specific services rendered (permitted under UNCLOS Article 26 for services actually rendered to ships) or an unlawful toll on transit passage. Past precedents — such as the 1980s Tanker War, the 2019 attacks on tankers, and Iran's seizure of foreign vessels — suggest a pattern of using the strait as a geopolitical lever. For India, the implications are multi-dimensional. Economically, higher shipping costs feed into crude prices, widening the trade deficit and complicating fiscal management. Strategically, it underscores the urgency of diversifying energy sources — accelerating the shift to renewables, expanding strategic petroleum reserves (SPR), and deepening ties with alternative suppliers like the US, Russia, and African nations. Diplomatically, India must navigate carefully: it cannot afford to alienate Iran (crucial for Chabahar and regional connectivity) nor ignore US expectations under frameworks like the Indo-Pacific Strategy. Domestically, this reinforces the need for a robust National Energy Security Policy, potentially invoking Article 21 (Right to Life, interpreted to include access to energy) and Directive Principles under Article 39(b) (distribution of material resources for common good). Looking ahead, the international response will be pivotal. If major powers and shipping entities comply, it sets a dangerous precedent for other chokepoints — Bab el-Mandeb, Malacca, Suez. If challenged legally (e.g., via ITLOS or arbitration) or met with naval coalitions (like IMSC — International Maritime Security Construct), tensions could spike. India should actively engage in multilateral forums — IMO, UNCLOS mechanisms, IORA — to uphold rules-based order while pursuing energy autonomy through the National Green Hydrogen Mission, ethanol blending targets (20% by 2025-26), and expanded SPR capacity (currently ~5.33 MMT, targeting 6.5 MMT). This episode is a stark reminder that geography, law, and power converge at maritime chokepoints — and India's rise as a maritime power depends on mastering all three.