US President Donald Trump warns Iran of intensified US strikes

The recent announcement by US President Donald Trump regarding the resumption of blockade on Iranian ports marks a critical escalation in the long-standing US-Iran confrontation, with profound implications for global energy security and international maritime law. To understand the gravity of this development, we must trace its roots to the 2018 US withdrawal from the Joint Comprehensive Plan of Action (JCPOA) — the 2015 nuclear deal between Iran and the P5+1 nations (US, UK, France, Russia, China, and Germany). The Trump administration's "maximum pressure" campaign reimposed crippling sanctions on Iran's oil exports, banking sector, and shipping industry, aiming to force Tehran into a broader agreement covering its ballistic missile programme and regional influence. In response, Iran gradually reduced its compliance with the JCPOA, enriching uranium beyond agreed limits and restricting IAEA inspections. The Strait of Hormuz, a narrow chokepoint between the Persian Gulf and the Gulf of Oman, lies at the heart of this crisis. At its narrowest, the strait is only 33 km wide, with a two-mile-wide shipping lane in each direction. Approximately 20-21 million barrels per day — roughly 20% of global petroleum consumption — transit through this waterway, making it the world's most critical oil transit chokepoint. Any disruption here sends immediate shockwaves through global energy markets, as witnessed during the 1980-88 Iran-Iraq War's "Tanker War" and the 2019 attacks on oil tankers attributed to Iran's Islamic Revolutionary Guard Corps (IRGC). Key stakeholders include the United States, seeking to enforce sanctions and protect freedom of navigation; Iran, viewing the strait as its strategic leverage; major oil importers like China, India, Japan, and South Korea; and Gulf Cooperation Council (GCC) states, particularly Saudi Arabia and the UAE, which rely on the strait for exports. The US Fifth Fleet, headquartered in Bahrain, maintains a persistent naval presence to ensure maritime security. For India, the implications are severe and multifaceted. As the world's third-largest oil consumer, India imports over 85% of its crude oil, with historically 10-15% sourced from Iran before US sanctions forced a halt in 2019. Any prolonged closure or instability in the Strait of Hormuz would spike global oil prices, widening India's current account deficit, weakening the rupee, and fueling domestic inflation — directly impacting fiscal policy under the Fiscal Responsibility and Budget Management (FRBM) Act. Higher fuel prices also increase subsidies on LPG and kerosene, straining the Union Budget. Strategically, India's Chabahar Port investment in Iran — developed under a trilateral agreement with Afghanistan and Iran to bypass Pakistan — faces renewed uncertainty. Diplomatically, India must balance its strategic partnership with the US (including defence cooperation under COMCASA and BECA) with its civilisational ties to Iran and energy security needs. Constitutionally, Article 246 read with Entry 14 of the Union List ("entering into treaties and agreements with foreign countries") empowers the Centre to conduct foreign policy. Article 51(c) of the Directive Principles of State Policy mandates the state to "foster respect for international law and treaty obligations." The United Nations Convention on the Law of the Sea (UNCLOS), 1982 — ratified by India in 1995 — guarantees freedom of navigation in international straits (Article 38), which the US invokes despite not ratifying UNCLOS. Iran's threats to close the strait violate customary international law and UNCLOS provisions on transit passage. Broader themes include the erosion of multilateralism, the weaponisation of economic interdependence, and the fragility of rules-based maritime order. The crisis also highlights the limits of US unilateralism when key allies (EU, Japan, India) resist secondary sanctions. Future implications are alarming: potential for direct military confrontation, further fragmentation of global energy markets, acceleration of energy transition efforts, and possible realignment of Gulf security architecture. For UPSC aspirants, this case study encapsulates the intersection of geopolitics, energy economics, international law, and India's strategic autonomy — a recurring theme in GS Paper II and III.