Time runs short for Iran and America: the Hormuz endgame and India

The brief in 9 cards

1. Context1 / 9

   The Strait of Hormuz is a channel of water between southern Iran and the northern tip of Oman. At its narrowest it is about 33 kilometres wide. The lanes that ships can actually use are narrower still, just a few kilometres in each direction. It is the only way out of the Persian Gulf by sea.

   Every barrel of oil that leaves by ship from Saudi Arabia, Iraq, Kuwait, the UAE and Qatar must pass through it. So must liquefied natural gas (LNG) from Qatar and the UAE, a large share of the world's traded fertiliser, and much of the cooking gas that Asia and Africa burn.

   Picture a large industrial estate with dozens of working factories, where every lorry must leave through one gate. The factories can be undamaged and fully staffed. But if the gate is shut, nothing they make reaches anyone.

   What happened

   On 28 February 2026, the United States and Israel struck Iran. Iran's Supreme Leader was killed in those strikes. Iran hit back at American bases in the region, at Israel, and at sites in nearby countries. It also closed the strait.

   The International Energy Agency (IEA) calls what followed the largest supply disruption in the history of the world oil market. Traffic that normally ran at about 20 million barrels a day fell to almost nothing. Gulf producers shut down output because there was nowhere to send it. World oil supply dropped by more than 10 million barrels a day in a single month. Oil piled up inside the Gulf, where oil stored on ships rose sharply, while stocks everywhere else were drawn down. This shows what a chokepoint is. The oil existed, but it could not move.

   Attempts to stop it

   • Early April: a two-week pause.
   • June: a memorandum was signed that opened a 60-day window for talks. It offered sanctions relief and an end to the blockade, in return for reopening the strait and nuclear commitments.
   • Early July: the memorandum fell apart within weeks and fighting began again.

   It is tempting to see the present round of talks as a repeat of the last one. The case against that view is that conditions have changed. Both sides are now running out of the material, political and economic means to carry on.

   Where things stand in late September

   At the UN General Assembly, Iran's Foreign Minister said the strait would open within seven days if Washington met certain conditions. Tehran says these conditions were already agreed in June. It is also reported that Iran has put forward a fuller road map: a ceasefire across the whole region for up to 60 days, and a reopening in stages. Qatar, Pakistan and Egypt are mediating. Washington's position is that the blockade stays until Iran shows good faith.

   Look at the shape of the deadlock. Neither side says a deal is out of reach. Each insists that the other must move first.

2. Key highlights2 / 9

   Why both sides are running out of time

   The American limits

   • Prices at home. Energy costs reach transport, food and the general price level within weeks. Pump prices in the United States reached their highest in several years. A government facing elections for Congress on 3 November 2026 wants to show a solution before voters feel the war in their own budgets.
   • Weapons stocks. Long operations use up interceptors and precision munitions faster than factories replace them. This is not about political will. A missile fired in March takes months to make. So a long campaign has a material ceiling, whatever the public thinks.
   • The cost of reopening by force. Clearing a mined waterway against an enemy with missiles on the shore is one of the hardest jobs a navy can face. It would also put at risk the very ships it is meant to protect. Because force is so costly, diplomacy has room to work.

   The Iranian limits

   • Money. Iran also exports through Hormuz. A closure that starves the world of Gulf oil also starves Iran of its own sales. Sanctions and limited access to foreign currency add to this. The weapon hurts the hand that holds it, so it cannot be held forever.
   • Losses. Iran's leadership, navy and air capabilities have suffered serious damage over seven months.
   • Neighbours. Gulf states depend on the same waterway. They are not natural supporters of a long closure, and Iran needs them.

   The logic underneath

   Iran cannot match American conventional power and does not try. It relies on asymmetric deterrence. This means tools that are cheap compared with what they threaten, and that are boosted by geography.

   Here is an analogy. A small shop cannot outspend a national chain in a price war. But if the shop sits at the only entrance to the market, the chain must deal with it whatever their sizes. Position takes the place of strength.

   Mines, anti-ship missiles, fast attack boats, drones and 33 kilometres of water do for Iran what a far bigger navy could not. That leverage is why there is a negotiation at all. It is also why Iran will not give it up cheaply.

   Through the crisis, Tehran has also argued that the strait is not closed. It says it is closed only to those at war with Iran, and that others can pass after coordinating with Iranian authorities. This wording matters. It keeps the leverage, but avoids the claim that Iran has shut an international waterway to the whole world. That claim would unite every seafaring state against it.

3. Key concepts3 / 9

   The strait: geography, volumes and what breaks

   Scale. About a fifth of the world's oil supply moved through the strait before the conflict. That is about 20 million barrels a day of crude oil and oil products. About a fifth of the world's LNG supply passed through it in 2025. More than 30 per cent of the world's urea trade and about 20 per cent of its ammonia trade pass through as well. So do helium, sulphur and aluminium.

   Where it goes. Most of it is bound for Asia: China, India, Japan and South Korea. So the strait is an Asian supply line guarded by an American security guarantee. This mismatch explains why Washington has sought a multinational naval coalition, and why Asian states have been slow to join one.

   Ways around it. Only limited amounts can leave by pipeline. One is Saudi Arabia's East-West line to the Red Sea. The other is the UAE's line to Fujairah. These cover only part of the flow, and the Red Sea has security problems of its own.

   What the closure did

   • At the worst point, Gulf output fell by more than 14 million barrels a day below its pre-war level.
   • Total losses passed one billion barrels.
   • Oil prices posted their biggest monthly gain on record in March. Brent came close to $120. Since then it has moved in a shaky range from about $70 to above $100, depending on how the talks are going.
   • The IEA released emergency stocks on an unprecedented scale, reported at around 400 million barrels. It warned that this cushion, along with lower demand, would be used up by mid-year.

   The cooking-fuel channel. This is where an energy crisis becomes a household crisis. Gulf LPG supplies cooking gas across Asia and Africa. Crude has other suppliers, but LPG largely does not. For a poor household, the answer to a lack of LPG is not another supplier. It is a return to firewood, dung cakes or kerosene. That brings smoke indoors, and women bear most of the harm.

   The fertiliser channel. Urea and ammonia pass through the same gate. Fertiliser shortages work on the farming calendar, not the news cycle. Damage from a disruption in March shows up in a harvest months later. According to the Observer Research Foundation (ORF), this is the most dangerous route by which the shock spreads, because the delay hides it.

   The legal question. Iran has floated a new system for transit through the strait. One Iranian negotiator suggested that access would carry charges. Oman shares the management of the waterway and is reported to oppose tolls. Washington calls them unacceptable. This matters well beyond the present conflict. It decides whether passage through an international strait can be made conditional and priced. Any precedent set here would apply to every strait in the world.

4. Note4 / 9

   India: the exposure, and what the government did

   How exposed India is

   India is the world's third-largest oil importer and the second-largest buyer of LPG. Before the crisis, about half of India's crude imports, out of around 5 million barrels a day, passed through Hormuz. So did about half its LNG and the great bulk of its LPG.

   There are two points that lift an answer above the average.

   First, India's crude exposure had recently gone up, not down. Its dependence on Hormuz for crude was lower in 2025 and rose in early 2026, as Indian refiners bought less Russian oil. This is uncomfortable. Something done for one set of reasons made India more open to a different risk. Energy security is a portfolio problem. Cutting one exposure can raise another.

   Second, LPG is the real weak spot, not crude. India imports most of its cooking gas, and the great bulk of those imports came through the strait. Crude can come from Russia, West Africa, Latin America and the US. LPG is concentrated in the Gulf. An answer that makes crude the main risk has the story the wrong way round.

   How to read the numbers. India's Hormuz share of crude has been reported at 30, 41, 45, 50 and 52 per cent. For LPG, reports range from 60 to 90 per cent. These are not contradictions. Agencies measure different things over different periods, and LPG figures change depending on whether the base is total use or imports. Writing "about half of India's crude imports normally pass through the strait" is safer than quoting an exact figure with no date.

   What it did to prices. The Indian crude basket went from around $69 a barrel in February to around $113 in March. That is a jump of well over half in a month, and it reflects both the price and the cost of securing cargoes.

   The government's response, in six parts

   1. Buying elsewhere. In early March, the Petroleum Ministry said Indian refiners could get supplies that did not go through Hormuz, and that stocks of crude and products were enough for a short disruption. Refiners drew on more than forty countries.
   2. Buying from Iran again. India began buying Iranian crude and LPG after a gap of seven years. A cargo of Iranian LPG berthed at a southern port. This matters and can be examined. It is a visible act of independent judgement, in a sanctions setting shaped by a partner.
   3. Saying no to the naval coalition. Washington urged states that depend on Hormuz to join a US-led naval coalition to protect shipping. India chose instead to negotiate safe passage directly with Tehran. This is the most interesting Indian decision of the whole episode, and it is discussed again in the PSIR section below.
   4. Escorts and seafarer protection. Indian-flagged LPG carriers crossed the strait repeatedly through March and April under arrangements coordinated with Iranian authorities. Each carried tens of thousands of tonnes. In early April, the government reported seventeen Indian-flagged ships, with around 460 Indian seafarers, in the western Persian Gulf. Government briefings tracked ship positions in public.
   5. Making more at home. State refiners raised domestic LPG output sharply, by about a fifth from one month to the next by September. Imports were spread more towards the United States, Africa and the UAE. India had already signed a structured contract for American LPG for 2026.
   6. Reopening kerosene. The government issued a notification allowing Superior Kerosene Oil to be given out through the Public Distribution System in 21 States and Union Territories. It cited the geopolitical situation.

   The last step deserves its own paragraph. It is the most telling single fact in India's response. For two decades India moved households off kerosene and on to LPG, for health, safety and subsidy reasons. Reopening kerosene shows that the cooking-fuel chain was under real strain. It also shows that gains built up over decades can be paused by an event in a strait four thousand kilometres away.

   The cost to the economy. An ORF assessment from July 2026 says India's current account deficit grew by roughly a quarter over the year, almost entirely because of the oil import bill. It argues that India paid for Hormuz in its external accounts, not in lost growth or jobs. Stock buffers, buying from more suppliers, the IEA's emergency release, China buying less and Gulf oil moving by other routes together absorbed what would otherwise have been a big economic shock. These are estimates, not official figures.

   Chabahar and connectivity. India has a stake in Chabahar port in Iran. The port is part of the International North-South Transport Corridor (INSTC) and gives access to Afghanistan and Central Asia. It now sits inside the conflict zone. Insurance, sanctions treatment and physical security all affect it.

   The diaspora. Millions of Indians live and work in the Gulf, and Indians are a large share of the world's merchant seafarers. Consular support, readiness to evacuate people and seafarer welfare are not side issues in this crisis. For many Indian families they are the crisis.

5. Note5 / 9

   Why a lasting settlement is hard

   A ceasefire is not a settlement. Five things stand between the two.

   1. Checking the nuclear programme. Washington's stated aim is for Iran to confirm that it will never seek a nuclear weapon. At times it has demanded zero enrichment. Any lasting deal needs inspections that both sides accept. But after strikes on nuclear sites, inspectors face a starting problem. They must first find out what exists now and where. Access has been limited.

   2. Missiles. Iran has consistently kept its ballistic missile programme out of the talks. From Tehran's view this is not stubbornness but arithmetic. The missiles are the reason there is a negotiation, and trading them away removes the leverage that produced the offer.

   3. Allied armed groups. Groups aligned with Iran operate in several places. Hezbollah's operations from Lebanon drew Israeli ground action there. Houthi activity has threatened Red Sea shipping and has reached as far as launches at Saudi Arabia. A deal between two states does not automatically bind them. Their actions can wreck an agreement that neither main party wants to lose.

   4. Mistrust with evidence behind it. This is not a matter of feelings. The April pause lasted a fortnight. The June memorandum's 60-day window collapsed within weeks. Washington says it will not go back to those terms. Tehran says its conditions are only those terms. Each side's doubt has a record to point to.

   Bargaining theory calls this a commitment problem. Both sides prefer a deal to war, but neither can credibly promise to keep it. It is the standard explanation for why wars go on after the point where continuing helps anyone. This case shows it very clearly.

   5. The Israel-Iran rivalry is a separate track. A US-Iran understanding would not settle it. Israel is a party to the conflict in its own right, with its own stated worries. An answer that treats a Washington-Tehran deal as the end of the confrontation has misread how the problem is built.

6. Note6 / 9

   The global and regional picture

   Inflation in the Global South. Poorer importing countries absorb energy shocks worst. They have no reserve buffers, little ability to hedge, and little room in their budgets. Fuel and food weigh heavily in household spending. This is the Global South angle. It can be examined under both GS-II and PSIR Section B.

   Danger at sea. Ship crossings of the strait fell to a handful by late September, against normal peacetime levels. War-risk insurance, crew shortages and the cost of longer routes add to the physical blockage. Attacks on commercial tankers have been reported.

   LNG and gas. Qatari and Emirati LNG losses have run into billions of cubic metres a week since the closure began. This has reversed a market that was moving towards balance. Damage to Qatari gas liquefaction capacity has been reported, with repair times of several years.

   Human security. The cooking-fuel channel is the clearest present-day example of human security as different from state security. The thing being protected is the household, not the state.

   Regional hedging. Gulf states clearly do not want to be the ground on which a US-Iran confrontation is fought. Expect more regional diplomacy, wider security partnerships and hedging between outside powers.

   China. Beijing is the largest single buyer of Gulf energy and clearly wants the strait reopened. It is reported that China has tried to help calm the conflict, alongside its own talks with Washington. A Chinese role in steadying West Asian energy flows would be a major development for the international order. It can be examined directly under Changing International Political Order.

   Who mediated. Qatar, Pakistan, Egypt and Oman did. The Security Council did not. The PSIR section below returns to this point.

7. Note7 / 9

   PSIR: theory, not just narrative

   A General Studies answer tells the story and judges the policy. A PSIR answer uses the event to test an idea. The points below follow the PSIR syllabus units.

   1. Realism and its limits (Approaches to IR)

   Where realism holds up

   • Anarchy and self-help. No authority above the states stopped this. It went on until material cost, not norms, law or institutions, forced a rethink.
   • Security comes first. Iran's refusal to bargain over its missiles only makes sense as a survival calculation. This is especially so after strikes described as aimed at regime change that killed the Supreme Leader.
   • Capabilities decide outcomes. There is a negotiation because Iran controls something Washington needs.

   Where structural realism strains. Three things sit outside it.

   • Domestic politics. The November election appears in every serious account of American motives. It is a factor inside the state, which Waltz's theory sets aside.
   • Non-state actors. Hezbollah and the Houthis can wreck an agreement between states.
   • Markets. What brought both sides to the table is a world price mechanism working through third parties who are not fighting.

   Neoclassical realism can hold all three. It says pressure from the system is filtered through domestic structures and the views of leaders. Using it here, instead of falling back on Waltz, shows range.

   2. Deterrence under asymmetry (key concepts)

   Classical deterrence assumes the two sides are roughly equal and can hurt each other. This is different. Iran does not threaten to destroy its rival. It threatens something the whole world shares, the free flow of energy, on which its rival's allies and the world economy depend.

   Terms worth using:

   • Deterrence by punishment and deterrence by denial.
   • The stability-instability paradox.
   • Escalation dominance, which is missing here.
   • Credibility. Iran built it by demonstration, not by declaration.

   Notice also the security dilemma in its purest form. Strikes meant to remove a nuclear capability give the target the strongest possible argument that it needs one.

   3. Interdependence turned upside down (Evolution of the International Economic System)

   Keohane and Nye said complex interdependence raises the cost of conflict and so holds it back. This is the liberal hope that trade produces peace.

   This case turns that around. Interdependence did not prevent the conflict. It became a tool of the conflict. Flows squeezed through a single point created leverage, and the owner of that point used it.

   The matching body of ideas is the weaponisation of interdependence. It says networked economic structures with chokepoints give coercive power to whoever controls the node. Examples are energy straits, financial messaging systems, semiconductor supply chains and undersea cables. A candidate who links Hormuz to this wider argument has a truly current answer on international political economy.

8. Note8 / 9

   PSIR: the UN, law, proliferation and India

   4. Collective security and the UN (United Nations unit)

   This is a clean example of a built-in limit. The Security Council cannot act against a permanent member or its close partners, because the veto was designed for exactly that. Appeals to the UN to authorise force to reopen the strait were never going to succeed. The reasons lie in the design of the system, not in the circumstances.

   What the system kept was Chapter VI: the Secretary-General's good offices, meetings at the General Assembly, and planned regional travel. That is mediation, not enforcement.

   Notice too who actually did the work. Qatar, Pakistan, Egypt and Oman did, with China interested in calming things. It was regional and bilateral, not institutional. This is strong evidence that conflict management has moved from universal bodies to ad hoc regional groups. That can be examined directly under Regionalisation of World Politics and Changing International Political Order.

   5. International law (Contemporary Global Concerns)

   The UN Convention on the Law of the Sea (UNCLOS) provides for transit passage through straits used for international shipping. The coastal state cannot suspend it. Iran signed UNCLOS but did not ratify it, which complicates the argument. Still, transit passage is widely held to reflect customary international law.

   Iran's line, that the strait is open except to those at war with it, is a legal position as much as a military one. It is designed to avoid the charge of closing an international waterway. The idea of a transit system with charges would be a far bigger break from the law. That is why Oman and Washington both reject it.

   A PSIR answer that mentions the legal side, without claiming it settles anything, is more complete than one that treats the episode as pure power politics.

   6. Proliferation (Contemporary Global Concerns; India and the Nuclear Question)

   The path from the JCPOA, through the US withdrawal, growth in enrichment and strikes on nuclear sites, raises the central question of proliferation theory. Does force produce restraint, or does it speed up the search for a deterrent?

   Sagan's security model says states seek weapons mainly because they feel threatened. On that model, strikes aimed at regime change are the most persuasive argument that a deterrent is needed. The other view is that a shown readiness to use force raises the expected cost of trying. The evidence is contested, and you should say so.

   The link to India is its own nuclear path, its position outside the NPT, and its long argument that the regime is unfair. The Iranian case is the usual comparison in that debate. Draw the comparison with care.

   7. India's foreign policy: the question to examine (Section B)

   The determinants approach explains India's position well. India depends on imported energy. It has a huge diaspora in the Gulf and receives large remittances. It has a long relationship with Iran, including Chabahar, a deepening one with Israel, a strategic partnership with the United States, and growing economic ties with the Gulf Arab states.

   But the sharp question is this. India was asked to join a naval coalition to protect a waterway it depends on, and it said no. It chose to negotiate passage directly with Tehran. What does that tell us?

   • Reading one: strategic autonomy in action. India protected its own shipping without putting itself under another state's campaign. It kept the Iran relationship alive for the day the war ends. It avoided a military commitment with no exit. At the same time it bought Iranian oil, expanded American LPG contracts and deepened Gulf Arab ties. That is the classic meaning of autonomy: keeping the freedom to choose, having many relationships, and belonging to no bloc.
   • Reading two: autonomy as an excuse. India had half its crude, most of its cooking gas, millions of nationals and hundreds of seafarers in the war zone. Yet it had no visible influence on the outcome. It managed its exposure. It did not shape events. Autonomy without influence describes absence, not agency.

   How to combine the two. What separates them is capability, not intention. Autonomy means something when a state can affect outcomes and chooses its own terms of engagement. It becomes an excuse when the state cannot. India's response was overwhelmingly about resilience (reserves, buying from other suppliers, escorts, home production, kerosene), not influence. Whether that is the right use of effort for a state of India's size and ambition is the real question. Putting it that way is stronger than simply picking a side.

   A confident candidate can add one more point. India said no to the coalition while buying Iranian crude, contracting American LPG and deepening Gulf ties. That is not sitting on the fence. It is issue-based alignment, the working successor to non-alignment, in which a state lines up differently on different questions instead of permanently on all. Whether this is a doctrine or the lack of one is itself disputed. Saying so shows you know the debate.

   8. Thinkers and frameworks to use

   Waltz on structure and on the spread of nuclear weapons. Mearsheimer on offensive realism and regional hegemony. Keohane and Nye on complex interdependence. The literature on weaponised interdependence. Fearon on rationalist explanations for war and the commitment problem. Sagan on models of proliferation. Buzan on regional security complexes, which fits West Asia well. Wendt, where the answer turns on how threats are constructed rather than simply given.

9. Way forward9 / 9

   Way forward

   Phased, checkable and simultaneous. Because of the commitment problem, neither side will move first. Deals where steps happen together and can be seen independently are stronger than promises of later payback. For example, reopening could be matched with named relief, each step checkable. This is exactly where mediators earn their place. They can hold guarantees, check that steps are truly simultaneous, and give cover for a concession that would otherwise look like surrender.

   Bring back inspections. Whatever the political deal, both sides must accept an inspection system for it to last. The value of the IAEA is that neither side wrote its assessment.

   A maritime security forum for the Gulf. A root cause of repeated crises is that Iran, the Gulf Arab states and outside powers have no standing forum where sea incidents can be managed. Oman and Qatar have shown they can mediate and are the likely conveners. This tackles the cause, not the symptom.

   Protect the legal status of the strait. A settlement that allows tolls or a permission system for transit passage would set an example for every international strait. India is a major trading nation at sea. It has a direct interest in resisting that, and this interest exists quite apart from the price of crude. It is worth naming in an answer.

   What India should do

   • Reserves. Expand strategic petroleum reserve capacity, and rethink the coverage targets in light of how long this cushion had to last.
   • LPG is the priority, not crude. Buying crude from more countries worked. For cooking gas it has barely begun. The tools are structured contracts with suppliers outside the Gulf, more domestic production of LPG, and import terminals on both coasts.
   • Fertiliser resilience. More domestic urea capacity, other suppliers, and buffer stocks timed to the sowing season rather than the financial year.
   • Other corridors. INSTC and Chabahar where they are workable, judged honestly for their own risks and not treated as automatic answers.
   • Seafarers and the diaspora. Turn what was improvised into standing systems: ship tracking, passage coordination, extra consular capacity and readiness to evacuate people.
   • IEA membership. India benefits from an emergency stock system in which it takes part only as an Association country, not a full member. Whether that gap can last, given that India is among the biggest beneficiaries, is a fair policy question.
   • Do not undo hard-won gains. Reopening kerosene was the right emergency step. It should be clearly temporary, with a stated path back, so that a two-decade shift away from solid and liquid cooking fuels is not quietly reversed by an emergency that ends.

   The main lesson

   Two lessons sit in this episode, and they point in different directions. First, a state that cannot win a war can still close a waterway. Having the stronger military does not mean controlling the shared routes of the world. Second, resilience built in advance decides what a shock costs. It cannot be built during the shock.

   For India, the second lesson is the one to act on. The move to buy crude from more countries, made years ago, is why this crisis was paid for in the external account and not in growth and jobs. The work left is to do for cooking gas and fertiliser what has already been done for oil.

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