The spectre of open conflict caused by Israeli\u2019s offensive illegal attack on Iran\u2014or the yet limited confrontation between Iran and the United States\u2014poses immediate and profound ramifications for global energy markets. At the heart of this nexus lies the Strait of Hormuz, through which approximately 18\u201320 million barrels per day of crude, condensates, and liquefied natural gas transit\u2014nearly 20\u202fpercent of global oil demand.\u00b9 In an environment where the market has grown desensitized to recurrent geopolitical tensions,\u00b2 the prospect of Iran militarily closing the Strait signals one of the few shock scenarios still capable of disrupting equilibrium in supply and unleashing price surges.\u00b3 This essay analyses four domains:<\/p>\n
- \n
- Immediate impacts<\/strong>\u00a0on oil prices and volatility;<\/li>\n
- Market instability mechanisms<\/strong>, including supply chain disruptions and risk premiums;<\/li>\n
- OPEC and OPEC+<\/strong>\u00a0responses aimed at price stabilization, including coordination and production adjustments;<\/li>\n
- Iran\u2019s role and strategic logic<\/strong>, particularly its potential to close the Strait and how it fits within its broader political narrative.<\/li>\n<\/ol>\n
The analysis is underpinned by a preference for Iranian strategic agency\u2014recognizing both the existential insecurity driving Iran\u2019s choices and the financial prudence often guiding its actions\u2014while maintaining academic rigor and symmetrical argumentation.<\/p>\n
- \n
- Immediate Impacts: Price Spikes and Market Reactions<\/strong><\/li>\n<\/ol>\n
Historically, geopolitical flare-ups in the Middle East have triggered immediate oil price escalations, even when actual supply remained unaffected.\u2074 The 1973 OAPEC embargo and the 1979 Iranian Revolution provide salient precedents: in each case, prices more than doubled despite moderate production declines.\u2075 Similarly, during the current hostilities, Brent crude surged from the high\u2011$60s into the $70\u201378\u202frange as tensions escalated.\u2076 That volatility reflects price setting driven by fear and potential rather than confirmed supply loss.\u2077<\/p>\n
Oil price dynamics in this context are shaped by two forces:<\/p>\n
- \n
- Immediate risk premium<\/strong>: Market participants add a buffer ($5\u201315\/bbl) to account for potential supply disruptions, derived from algorithmic trading and speculative hedging.\u2078<\/li>\n
- Structural supply vulnerability<\/strong>: With 20\u202fpercent of oil passing through Hormuz and only limited pipeline alternatives\u2014Saudi Arabia\u2019s East\u2013West (~5\u202fMb\/d), UAE\u2019s Habshan\u2013Fujairah (~1.5\u202fMb\/d), and Iraq-to\u2011Turkey (~2\u20133\u202fMb\/d)\u2014any disruption unleashes a classic chokepoint crisis.\u2079<\/li>\n<\/ul>\n
Analyses by Goldman Sachs, Oxford Economics, and Cohen & Steers suggest that a full closure of Hormuz could push Brent above $100\u2011130\u202fper barrel, with initial jumps of $40\u201160\/bbl in the days following\u2014a level that would reverberate through global inflation and supply chains.\u00b9\u2070 These projections hold even absent structural supply shocks, underlining the power of perception in today’s hyper\u2011connected markets.<\/p>\n
- \n
- Market Instability: Supply Shock Mechanics and Economic Fallout<\/strong><\/li>\n<\/ol>\n
2.1 Chokepoint Disruption & Strategic Stock Releases<\/strong><\/p>\n
A full Iranian blockade of Hormuz would sever exports not just from Iran but from Saudi Arabia, Kuwait, Iraq, and the UAE\u2014a collective loss of ~15\u201318\u202fMb\/d of supply.\u00b9\u00b9 Although the IEA and OECD maintain strategic petroleum reserves to blunt shocks, the speed of price increases would likely outpace organized releases.\u00b9\u00b2 Moreover, re-routing via pipelines involves capacity limits and would be prohibitively costly in volume and logistics.\u00b9\u00b3<\/p>\n
Consequently, a Hormuz crisis would set off a chain of economic consequences:<\/p>\n
![\"\"](\"https:\/\/www.iras.ir\/en\/wp-content\/uploads\/image.png1_-300x100.jpeg\")
<\/strong><\/p>\n2.2 Risk Premium Momentum<\/strong><\/p>\n
Even threats against Hormuz without closure heighten volatility. Since 2019, markets have entered a “prove-it” posture; traders demand confirmation of disruption before fully pricing in scenarios.\u00b2\u2078 As such, only aggressive action\u2014like a prolonged blockade\u2014would sustain spikes. Regardless, market responses typically overshoot initial fundamentals, heightening risk.\u00b2\u2079<\/p>\n
- \n
- OPEC and OPEC+: Managing the Shock<\/strong><\/li>\n<\/ol>\n
3.1 Spare Capacity as Emergency Damping<\/strong><\/p>\n
OPEC+ (which includes Russia plus additional non\u2011OPEC producers) currently retains ~5\u20135.5\u202fMb\/d of spare capacity, much in Saudi and UAE hands.\u00b3\u2070 In response to emerging imbalance, OPEC+ has historically increased output to stabilize price fluctuations. Yet this spare capacity lies physically behind the same chokepoint it seeks to offset; a Hormuz closure renders such capacity inaccessible, undermining its utility.\u00b3\u00b9<\/p>\n
3.2 Coordination, Production Cuts, & Market Signalling<\/strong><\/p>\n
Even amid internal tensions, OPEC+ managed to agree on output adjustments: 548\u202fkb\/d uplift scheduled in August\u202f2025, undoing temporary cuts from late 2023.\u00b3\u00b2 This signals intent\u2014to reassure markets\u2014but may lack teeth if physical access to barrels is jeopardized by a closed Strait.\u00b3\u00b3<\/p>\n
Beyond quantities, OPEC+ often coordinates via public messaging: affirming stability, discouraging panic, and signalling willingness to act if supply is disrupted.\u00b3\u2074 Yet this approach may fall short when the chokepoint itself, rather than output levels, is under threat.<\/p>\n
3.3 Market Limitations & Non\u2011OPEC Offsets<\/strong><\/p>\n
An oft-cited rationale for Iran (and other Gulf states) to avoid closing Hormuz is that any blockade will mobilize non\u2011OPEC production\u2014especially U.S. shale.\u00b3\u2075 U.S. SPR releases, spot market sourcing, and pipeline re-routings (e.g., around South Africa via VLCC sea routes) would reduce the global impact.<\/p>\n
Even with full Hormuz closure, shale could respond within months\u2014though not immediately\u2014or be hedged at higher prices.\u00b3\u2076 Thus, while OPEC+ seeks price self-management, its mechanisms have limits against chokepoint-induced shocks.<\/p>\n
- \n
- Iran\u2019s Calculus: Political Leverage Versus Economic Self\u2011Harm<\/strong><\/li>\n<\/ol>\n
4.1 Hose of Deterrence, Not Continuity<\/strong><\/p>\n
Iran\u2019s leadership views even the threat of closure as a powerful deterrent\u2014far more so than actual execution. The Parliamentary vote on June\u202f22,\u202f2025, to authorize closing Hormuz if attacked, signalled strategic seriousness without immediate commitment.\u00b3\u2077 Iranian analysts note that full closure would shut off its own revenues and choke access to its sole export channel.\u00b3\u2078<\/p>\n
Hence, closure should be understood as:<\/p>\n
- \n
- A bargaining chip to deter further strikes on Iranian soil\u2014avoiding escalation;<\/li>\n
- A means to rally domestic unity around national sovereignty;<\/li>\n
- A test of international resolve: would global powers risk war to keep Hormuz open?<\/li>\n<\/ul>\n
In short, Iran\u2019s posture is defensive, not expansionist nor offensive and certainly a response to Israeli and American attack.<\/p>\n
4.2 National Resilience and Oil Revenue Risk<\/strong><\/p>\n
Despite sanctions, Iran\u2019s oil production remains near 3.5\u202fMb\/d, with ~1.3\u20132.1\u202fMb\/d exported, largely to China.\u00b3\u2079 The Khark Island terminal accounts for ~90\u202fpercent of those exports.\u2074\u2070 Iran has grown its infrastructure and diversified export logistics.\u2074\u00b9 But closing Hormuz would indiscriminately punish both its economy and its allies\u2014testing the resilience of China, India, and others.\u2074\u00b2<\/p>\n
In this light, the rational Iranian calculation is calibrated: preserve deterrence, demonstrate resolve\u2014and avoid mutual economic destruction.<\/p>\n
- \n
- Fairness to Iran\u2019s Position<\/strong><\/li>\n<\/ol>\n
A sympathetic reading of Iran\u2019s political logic stresses several points:<\/p>\n
- \n
- National sovereignty<\/strong>: Israel and U.S. strikes on Iranian territory are viewed as existential threats. Hormuz blockade authority is a means of defensive escalation control.<\/li>\n
- Economic caution<\/strong>: Iran\u2019s reliance on oil revenue makes harmful strikes counter\u2011productive; thus, closure authorization is more symbolic than operational.<\/li>\n
- Diplomatic signalling<\/strong>: Threats heighten urgency for diplomatic de-escalation, potentially creating leverage in mediation attempts (e.g., China).<\/li>\n
- Market consciousness<\/strong>: Iranian strategy is informed by the knowledge that actual closure harms global economies\u2014including Iran\u2019s\u2014and that OPEC+ mechanisms can adapt in mild disruption scenarios. Hence restraint is more logical than reaction.<\/li>\n<\/ol>\n
- \n
- Conclusion<\/strong><\/li>\n<\/ol>\n
The Iran\u2013Israel conflict\u2014and any associated U.S. involvement\u2014places one of the world\u2019s most critical energy choke points in jeopardy. Market responses have been immediate but measured: modest price spikes driven by risk premiums, but no structural shortages yet.<\/p>\n
The path to major instability lies through the Strait of Hormuz. A closure would bypass traditional OPEC+ price-balancing tools; spare capacity becomes irrelevant when the chokepoint is inaccessible. In such a case, global Brent prices could tumble past $120, possibly reaching $150 under extended closures\u2014triggering inflationary shocks and growth slowdowns. Iran\u2019s strategic signalling\u2014authorizing but not enacting a blockade\u2014reflects a nuanced approach: leveraging deterrence without self-inflicted damage. OPEC+ is unprepared to offset chokepoint risks and remains a limited actor in true geopolitical crisis.<\/p>\n
In sum, Iran\u2019s political approach in leveraging Hormuz threats can be seen as both rational and proportional\u2014a defensive posture calibrated for maximum deterrence at minimal cost\u2014fitting within both national interests and global markets’ structural constraints.<\/p>\n
\u00a0<\/strong><\/p>\n
References:<\/strong><\/p>\n
\u00b9\u202fSee IEA data on Hormuz transit volumes: Piero Cingari,\u00a0Euronews<\/em>, June\u202f16,\u202f2025.
\n\u00b2\u202fBen Cahill,\u00a0CSIS<\/em>, July\u202f10,\u202f2025.
\n\u00b3\u202fGoldman Sachs and Oxford Economics modeling: Factum Obscura, Telesur, June 2025.
\n\u2074\u202fHistorical analogues: 1973 OAPEC embargo and 1979 Iranian Revolution; see Wikipedia\u00a01973 oil crisis<\/em>\u00a0and\u00a01979 oil crisis<\/em>.
\n\u2075\u202fIbid.
\n\u2076\u202fBrent spikes to $78: Financial Times, China\u2013Iran dynamics.
\n\u2077\u2002\u201cMarkets shrug off geopolitical risk\u2026\u201d: Ben Cahill,\u00a0CSIS<\/em>.
\n\u2078\u202fRisk premiums in Zadeh, DiscoveryAlert; compute $5\u201315 buffer per bbl.
\n\u2079\u202fCingari; Factum Obscura; Telesur.
\n\u00b9\u2070\u202fGoldman Sachs, RBC, Oxford Econ: Factum Obscura; Telesur; Cohen & Steers.
\n\u00b9\u00b9\u202fCingari; RUSI; Strait capacity referenced across IEA, Alarabiya.
\n\u00b9\u00b2\u202fFactum Obscura; DiscoveryAlert.
\n\u00b9\u00b3\u202fFactum Obscura; Times of India; RUSI.
\n\u00b9\u2074\u202fTelesur; Modern Diplomacy.
\n\u00b9\u2075\u202fTimes of India; Alarabiya.
\n\u00b9\u2076\u202fModern Diplomacy; DiscoveryAlert.
\n\u00b9\u2077\u202fGuardian commentary and historical inflation lessons.
\n\u00b9\u2078\u202fRUSI; Strait capacity.
\n\u00b9\u2079\u202fCohen & Steers.
\n\u00b2\u2070\u202fCSIS; IEA spare capacity data.
\n\u00b2\u00b9\u202fCSIS.
\n\u00b2\u00b2\u202fTurn0search22 Wikipedia.
\n\u00b2\u00b3\u202fCingari, IEA data; multiple sources.
\n\u00b2\u2074\u202fStrait closure threats in parliament: Wikipedia\u00a0Strait_of_Hormuz<\/em>.
\n\u00b2\u2075\u202fExport data: Wikipedia\u00a0Strait_of_Hormuz<\/em>, Telesur.
\n\u00b2\u2076\u202fKharg as hub: Modern Diplomacy.
\n\u00b2\u2077\u202fChina trade reliance: FT.
\n\u00b2\u2078\u202fCSIS; \u201cprove it\u201d anecdote.
\n\u00b2\u2079\u202fDiscoveryAlert, RUSI, Alarabiya.
\n\u00b3\u2070\u202fIEA spare capacity: CSIS; multiple OPEC+ statements.
\n\u00b3\u00b9\u202fCohen & Steers; CSIS; RUSI.
\n\u00b3\u00b2\u202fCSIS.
\n\u00b3\u00b3\u202fCSIS; RUSI.
\n\u00b3\u2074\u202fAlarabiya; RUSI on OPEC messaging.
\n\u00b3\u2075\u202fTelosur; DiscoveryAlert.
\n\u00b3\u2076\u202fFactum Obscura; Cohen & Steers.
\n\u00b3\u2077\u202fWikipedia\u00a0Strait_of_Hormuz<\/em>\u00a0event section.
\n\u00b3\u2078\u202fRUSI; Ben Cahill.
\n\u00b3\u2079\u202fTelesur; Wikipedia Strait_of_Hormuz; FT.
\n\u2074\u2070\u202fModern Diplomacy.
\n\u2074\u00b9\u202fTelesur; FT; Strait_of_Hormuz.
\n\u2074\u00b2\u202fFT; Telesur; Modern Diplomacy.<\/p>\n","protected":false},"excerpt":{"rendered":"By: Arash M. Akbari Introduction The spectre of open conflict caused by Israeli\u2019s offensive illegal attack on Iran\u2014or the yet limited confrontation between Iran and the United States\u2014poses immediate and profound ramifications for global energy markets. At the heart of this nexus lies the Strait of Hormuz, through which approximately 18\u201320 million barrels per day […]<\/p>\n","protected":false},"author":3,"featured_media":1253,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[128,1,126],"tags":[],"_links":{"self":[{"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/posts\/1252"}],"collection":[{"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/comments?post=1252"}],"version-history":[{"count":4,"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/posts\/1252\/revisions"}],"predecessor-version":[{"id":1259,"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/posts\/1252\/revisions\/1259"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/media\/1253"}],"wp:attachment":[{"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/media?parent=1252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/categories?post=1252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iras.ir\/en\/wp-json\/wp\/v2\/tags?post=1252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Economic caution<\/strong>: Iran\u2019s reliance on oil revenue makes harmful strikes counter\u2011productive; thus, closure authorization is more symbolic than operational.<\/li>\n
- National sovereignty<\/strong>: Israel and U.S. strikes on Iranian territory are viewed as existential threats. Hormuz blockade authority is a means of defensive escalation control.<\/li>\n
- Fairness to Iran\u2019s Position<\/strong><\/li>\n<\/ol>\n
- Iran\u2019s Calculus: Political Leverage Versus Economic Self\u2011Harm<\/strong><\/li>\n<\/ol>\n
- OPEC and OPEC+: Managing the Shock<\/strong><\/li>\n<\/ol>\n
- Structural supply vulnerability<\/strong>: With 20\u202fpercent of oil passing through Hormuz and only limited pipeline alternatives\u2014Saudi Arabia\u2019s East\u2013West (~5\u202fMb\/d), UAE\u2019s Habshan\u2013Fujairah (~1.5\u202fMb\/d), and Iraq-to\u2011Turkey (~2\u20133\u202fMb\/d)\u2014any disruption unleashes a classic chokepoint crisis.\u2079<\/li>\n<\/ul>\n
- Immediate risk premium<\/strong>: Market participants add a buffer ($5\u201315\/bbl) to account for potential supply disruptions, derived from algorithmic trading and speculative hedging.\u2078<\/li>\n
- Market instability mechanisms<\/strong>, including supply chain disruptions and risk premiums;<\/li>\n