Strait of Hormuz Crisis — US-Iran "
The crisis of a potential blockade of the Strait of Hormuz, through which approximately 20% of the world's oil shipments pass, will ripple through the entire global economy via a surge in energy prices. The unusually strong stance of a 48-hour ultimatum is not merely a diplomatic card, but indicates a new phase in the structural conflict.
── Understand in 3 points ─────────
- • President Trump warned that he would attack Iranian power plants if the Strait of Hormuz was not opened within 48 hours
- • Iran stated that if attacked, it would retaliate against power plants in various parts of the Middle East that supply electricity to US military bases
- • The Strait of Hormuz is the most critical choke point, through which approximately 20-21% of the world's seaborne oil shipments pass
── NOW PATTERN ─────────
The US-Iran "spiral of conflict" is self-reinforcing and accelerating due to the loss of diplomatic safety valves, while the Trump administration's "overextension of power" and the international community's "failure of coordination" make crisis control difficult.
── Probabilities and Responses ──────
• Base case 50% — Omani and Qatari foreign ministers' Middle East tour, Iran's restrained reaction after a precision strike by the US, China's Foreign Ministry statement of "readiness to mediate," decreased volatility in the crude oil market
• Bull case 20% — Formal proposal of "constructive mediation" by China's Foreign Ministry, phone call between President Trump and President Xi Jinping, Iranian Foreign Minister's statement of "conditional negotiation commencement," IAEA Director General's visit to the Middle East
• Bear case 30% — Large-scale US airstrikes, Iranian ballistic missile launches, reports of damage to Gulf state infrastructure, crude oil prices breaking $100, simultaneous attacks by Hezbollah and Houthis, reports of mines discovered in the Strait of Hormuz
📡 The Signal — What Happened
Why it matters: The crisis of a potential blockade of the Strait of Hormuz, through which approximately 20% of the world's oil shipments pass, will ripple through the entire global economy via a surge in energy prices. The unusually strong stance of a 48-hour ultimatum is not merely a diplomatic card, but indicates a new phase in the structural conflict.
- Military-Diplomacy — President Trump warned that he would attack Iranian power plants if the Strait of Hormuz was not opened within 48 hours
- Military-Diplomacy — Iran stated that if attacked, it would retaliate against power plants in various parts of the Middle East that supply electricity to US military bases
- Geopolitics — The Strait of Hormuz is the most critical choke point, through which approximately 20-21% of the world's seaborne oil shipments pass
- Energy — The strait's width is approximately 33km at its narrowest point, with the navigable channel restricted to only about 6km
- Military — The US military permanently deploys the Fifth Fleet (headquartered in Bahrain) in the Middle East and has reinforced it with additional carrier strike groups
- Economy — Crude oil passing through the Strait of Hormuz is estimated at approximately 17-20 million barrels per day
- Diplomacy — Following the collapse of the nuclear agreement (JCPOA), Iran has increased uranium enrichment to 60%, strengthening its negotiating leverage
- Security — Iran has focused on developing asymmetric capabilities (fast attack craft, mines, anti-ship missiles, drones) to enhance its ability to blockade the strait
- International Relations — Gulf states (such as Saudi Arabia, UAE, Qatar) face the risk of being caught in the crossfire due to the escalating US-Iran conflict
- Energy Markets — As the crisis deepens, crude oil prices are under upward pressure, with Brent crude nearing the high $90s per barrel
- Military Strategy — Iran's explicit targeting of power plants across the Middle East for retaliation has highlighted the infrastructure vulnerabilities of Gulf states
- Diplomacy — China and Russia maintain relations with Iran while officially calling for a resolution through dialogue
The US-Iran conflict over the Strait of Hormuz is an extension of a structural conflict spanning nearly half a century, dating back to the 1979 Iranian Revolution. However, to understand "why" the March 2026 crisis is occurring now, it is necessary to overlay multiple historical contexts.
First, there is the collapse of the nuclear agreement (JCPOA) and the failure of its reconstruction. The Iran nuclear deal, concluded under the Obama administration in 2015, was a groundbreaking framework that lifted economic sanctions in exchange for limiting Iran's nuclear development. However, in 2018, the first Trump administration unilaterally withdrew from the JCPOA and initiated a "maximum pressure" policy. The Biden administration sought to rejoin the agreement, but negotiations stalled due to Iran's progress in uranium enrichment and the impact of the Russia-Ukraine war. The second Trump administration has adopted an even tougher stance, and diplomatic channels have effectively remained closed. With the loss of the nuclear agreement as a "safety valve," relations between the two countries have fallen into a structure lacking a brake on military escalation.
Second, there is the maturation of Iran's asymmetric strategy. Although Iran is overwhelmingly inferior to the US military in conventional forces, it has refined its "Anti-Access/Area Denial (A2/AD)" strategy over the past two decades. The Islamic Revolutionary Guard Corps (IRGC) has systematically developed fast attack craft, mine-laying capabilities, anti-ship ballistic missiles, long-range cruise missiles, and, in recent years, kamikaze drones. The 2019 attack on Saudi Aramco oil facilities (attributed to the Houthis, but with Iranian technical assistance noted) and the large-scale missile and drone attack on Israel in April 2024 demonstrated Iran's actual capability for widespread retaliation. Iran's explicit statement this time about "retaliation against power plants supplying electricity to US military bases" is an extension of this asymmetric strategy, possessing the strategic rationality of indirectly paralyzing US military operational capabilities while avoiding direct military conflict.
Third, there is the issue of the Trump administration's diplomatic style. The "48-hour ultimatum" approach is part of the "brinkmanship" strategy characteristic of Trump's diplomacy, seen in his "fire and fury" remarks during the 2017 North Korea crisis and the assassination of General Soleimani in 2020. While this strategy exerts maximum psychological pressure on the opponent, it also carries the risk of narrowing the "exit" from escalation. Setting a 48-hour deadline severely limits room for negotiation and puts Iran in a position where conceding would mean a loss of face, making it almost politically impossible for Iran to back down domestically. In other words, the ultimatum itself has a structure that escalates the conflict.
Fourth, there is the context of geopolitical realignment in the Middle East. Following the Abraham Accords (2020), the normalization of relations between Israel and Gulf Arab states progressed, deepening Iran's regional isolation. On the other hand, with China mediating the normalization of diplomatic relations between Saudi Arabia and Iran in 2023, the unipolar dominance of the United States in the Middle East is beginning to waver. For Iran, control over the Strait is its single greatest leverage in this changing geopolitical landscape and cannot be easily relinquished.
Fifth, there are structural changes in the energy market. The United States has increased its energy self-sufficiency through the shale revolution, reducing its direct dependence on Middle Eastern crude oil. However, China, which has become the world's largest crude oil importer, along with East Asian countries such as India, Japan, and South Korea, remain highly dependent on the Strait of Hormuz. This creates a paradoxical structure where a crisis in the Strait of Hormuz would deal a greater blow to US allies and strategic competitors than to the United States itself. This asymmetry complicates the Trump administration's calculations.
These structural factors converge, and the March 2026 crisis should be understood not merely as an accidental escalation, but as the result of long-accumulated contradictions reaching a critical point. The absence of diplomatic safety valves, the maturation of asymmetric capabilities, the limits of brinkmanship diplomacy, the fluidity of regional order, and the asymmetry of energy dependence structures—these structural conditions acting simultaneously are causing the "spiral of conflict" to accelerate in a self-reinforcing manner.
The delta: The "48-hour ultimatum" by the Trump administration marked a qualitative shift from the conventional sanctions and pressure policy to a direct military attack warning. Iran's explicit statement of infrastructure retaliation has created a risk that the scope of the conflict will expand from a military clash between the two countries to energy infrastructure across the entire Middle East. This signifies that the "spiral of conflict" has entered a new phase.
🔍 Between the Lines — What the News Isn't Saying
Although not stated in official declarations, the 48-hour ultimatum is underpinned by the intersection of energy and security policies within the Trump administration. Instability in the Strait of Hormuz structurally enhances the competitiveness of US shale oil and LNG, aligning with the Trump administration's long-term strategy of establishing "energy hegemony." Furthermore, the true reason Iran explicitly stated retaliation against power plants is a strategy to "entangle" Gulf states, encouraging them to distance themselves from their alliance with the US and promote neutralization. In essence, the hidden nature of this crisis is not a bilateral US-Iran conflict, but a "structural pressure test" to realign the entire alliance structure of the Middle East.
NOW PATTERN
Spiral of Conflict × Overextension of Power × Failure of Coordination
The US-Iran "spiral of conflict" is self-reinforcing and accelerating due to the loss of diplomatic safety valves, while the Trump administration's "overextension of power" and the international community's "failure of coordination" make crisis control difficult.
Intersection of Dynamics
The three dynamics of "spiral of conflict," "overextension of power," and "failure of coordination" are not acting independently but form mutually reinforcing feedback loops. Understanding the structure of this interaction is key to deciphering the trajectory of the crisis.
First, there is a path where "failure of coordination" accelerates the "spiral of conflict." The international community's inability to collectively curb escalation reinforces the perception in both the US and Iran that "objectives can only be achieved through unilateral action." In a situation where the Security Council is dysfunctional and mediators are absent, military pressure becomes the sole "language," causing the spiral to rotate further.
Next, there is a path where the "spiral of conflict" induces "overextension of power." At each stage of escalation, the US is required to make greater commitments (additional troop deployments, attack warnings, security provisions to allies), which reduces its capacity on other strategic fronts (China, Russia). Simultaneously, Iran is also forced into overextension, further straining its domestic economy through the concentration of IRGC forces and mobilization of proxy groups.
Furthermore, there is also a reverse path where "overextension of power" deepens the "failure of coordination." The more the US strengthens its unilateralism, the more allies and neutral countries distance themselves, fearing "entanglement risk," making international cooperation even more difficult. The moves by Gulf states to seek their own channels with Iran (such as the normalization of Saudi-Iran diplomatic relations in 2023) are manifestations of this structural reaction.
This triangular feedback loop will continue to operate in a self-reinforcing manner unless there is strong external intervention (e.g., serious mediation by China or unexpected domestic political changes). Historically, similar structures have been observed in the alliance systems on the eve of World War I and during the Cuban Missile Crisis in the Cold War, where the timing and method of intervention determined the outcome of the crisis. In the current crisis, the extremely short 48-hour timeframe accelerates the operation speed of the feedback loop, and the rapidly narrowing window for diplomatic intervention is particularly dangerous.
📚 Pattern History
1962: Cuban Missile Crisis
Ultimatums and brinkmanship diplomacy between superpowers escalated the situation to the brink of nuclear war
Structural similarities with the current situation: An ultimatum may seem like an effective pressure tactic, but it can lead to catastrophic results if it doesn't leave the opponent a "way to retreat while saving face." Kennedy averted the crisis by offering Khrushchev a secret compromise (withdrawal of missiles from Turkey).
1987-88: Tanker War (Late Iran-Iraq War)
Military escalation over the Strait of Hormuz developed into a direct US-Iran clash (Operation Praying Mantis)
Structural similarities with the current situation: Small-scale clashes over the strait escalate rapidly. In April 1988, the US Navy destroyed about half of the Iranian Navy in one day, but this did not lead to regional stabilization; rather, it solidified a long-term conflict structure.
2002-03: Ultimatum Before the Iraq War
The Bush administration issued a 48-hour ultimatum to Saddam Hussein to leave, launching an invasion after the deadline expired
Structural similarities with the current situation: A 48-hour ultimatum can be a "diplomatic posture," a ceremonial procedure to justify a predetermined military course of action. The quagmire of the Iraq War vividly demonstrated the costs of overextension of power.
2019: Saudi Aramco Facility Attack
Iran's asymmetric attack exposed the vulnerability of Middle Eastern energy infrastructure
Structural similarities with the current situation: Precision attacks by cruise missiles and drones can bypass multi-billion dollar air defense systems. The development of asymmetric capabilities has made it technically possible for "smaller states" to inflict fatal damage on the infrastructure of "larger states."
2024: Large-scale Missile and Drone Attack by Iran on Israel
The taboo of direct attack was broken, lowering the escalation threshold for inter-state military conflict
Structural similarities with the current situation: Once a taboo is broken, the escalation threshold for the next crisis inevitably lowers. Iran may have learned that "direct attacks do not lead to regime change," which underlies its current hardline stance.
Patterns from History
Historical patterns offer clear lessons. First, a 48-hour ultimatum tends to function more as a prelude to military action than as a diplomatic tool (precedent of the Iraq War). Second, military clashes over the Strait of Hormuz escalate rapidly, and short-term military victories do not bring long-term stability (lesson from the Tanker War). Third, due to the development of asymmetric capabilities, the superiority of conventional forces does not necessarily function as an escalation deterrent (Aramco attack, 2024 Israel attack).
However, the most crucial pattern is the necessity of a "retreat path while saving face," as demonstrated by the Cuban Missile Crisis. The most dangerous moments in past crises were when one side perceived "retreat as defeat," whereas crises were averted when both sides were left with room to explain their actions as "rational decisions, not concessions." In the current US-Iran crisis, the 48-hour deadline severely narrows this retreat path, placing it in the most dangerous structural position according to historical patterns. Especially considering Trump's political style and the face-saving structure of Iran's revolutionary regime, it is extremely difficult for both sides to voluntarily back down, making third-party mediation or an unexpected event the most likely turning point.
🔮 Next Scenarios
The ultimatum deadline (48 hours) passes formally, but the US does not launch an immediate full-scale attack, instead limiting itself to targeted military action (precision strikes on Iranian military facilities around the strait, or cyberattacks). Iran carries out "symbolic retaliation" to save face (limited missile launches near US military bases, but with intentionally suppressed damage), avoiding full-scale escalation.
Under the surface, indirect diplomatic channels, such as mediating countries like Oman and Qatar, or through China, become active, leading to a provisional "shelving agreement" within weeks to months. Navigation in the strait effectively resumes, but fundamental issues (nuclear issues, sanctions, regional order) remain unresolved.
Crude oil prices temporarily rise to around $100 per barrel but settle in the low $90s as the crisis subsides. However, a "risk premium" will be added long-term, preventing a return to the previous $80s. The impact on the global economy will be limited to temporary supply concerns leading to inventory drawdowns and price fluctuations, but East Asian countries (Japan, South Korea) will be forced to release some of their strategic oil reserves.
The essence of this scenario is "kicking the can down the road," and since the structural conflict is not resolved, there is a high probability that a similar crisis will recur within six months to a year.
Implications for Investment/Action: Omani and Qatari foreign ministers' Middle East tour, Iran's restrained reaction after a precision strike by the US, China's Foreign Ministry statement of "readiness to mediate," decreased volatility in the crude oil market
An unexpected diplomatic breakthrough transforms the crisis into an opportunity for comprehensive negotiations. In this scenario, China undertakes serious mediation, with President Xi Jinping engaging in direct dialogue with both President Trump and Iran's Supreme Leader Khamenei. China is motivated by its own energy security while also aiming to enhance its presence in the international community.
As a result of mediation, an "interim agreement" is reached. Iran limits uranium enrichment to below 20% and expands its acceptance of IAEA inspections. The US eases some sanctions (civilian goods and medical supplies, excluding oil export sanctions). Agreement is reached on ensuring navigation safety in the strait through a multilateral mechanism (commencement of discussions for a joint patrol concept involving the US, China, India, Japan, and Europe).
If this scenario materializes, crude oil prices would return to the low $80s, and the geopolitical risk premium in the Middle East would significantly shrink. Furthermore, successful Chinese-led mediation could become the genesis of a new Middle East order replacing US unipolar dominance, potentially contributing to long-term regional stability.
However, this scenario requires many preconditions (the Trump administration accepting Chinese mediation, hardliners within Iran agreeing to expanded IAEA inspections, Gulf states participating in multilateral patrols), making its realization probability low.
Implications for Investment/Action: Formal proposal of "constructive mediation" by China's Foreign Ministry, phone call between President Trump and President Xi Jinping, Iranian Foreign Minister's statement of "conditional negotiation commencement," IAEA Director General's visit to the Middle East
After the ultimatum deadline, the US military carries out large-scale attacks on Iranian power plants and energy infrastructure, and Iran retaliates as declared against power plants and infrastructure across the Middle East, expanding the conflict from bilateral to regional scale.
In this scenario, the Islamic Revolutionary Guard Corps launches ballistic missiles and kamikaze drones towards power plants, desalination plants, and oil export facilities in Gulf states (especially Saudi Arabia, UAE, and Bahrain). Simultaneously, Hezbollah, the Houthis, and Iraqi Shiite militia groups activate attacks in various locations, endangering energy transport across a wide area from the Red Sea to the Persian Gulf.
Crude oil prices surge to over $130-150 per barrel, surpassing levels seen at the start of the Russia-Ukraine war in 2022. If desalination plants in Gulf states are damaged, it could lead to a humanitarian catastrophe of drinking water shortages. The global economy faces a stagflationary shock, with particularly severe impacts on energy-import-dependent countries like Japan, South Korea, India, and Europe.
Furthermore, if Iran lays mines in the strait, mine-clearing operations would take several months, leading to a prolonged closure of the strait. This scenario would be a "war without victory" for the US, with the costs of overextension of power becoming evident. To avoid a repeat of the Iraq War, the US would not conduct a ground invasion, but prolonged airstrikes and a chain of Iranian retaliations would create a "war of attrition without an exit." Vigilance is also required for the worst-case chain of nuclear escalation (Iran's accelerated nuclear development → risk of Israeli preemptive strike).
Implications for Investment/Action: Large-scale US airstrikes, Iranian ballistic missile launches, reports of damage to Gulf state infrastructure, crude oil prices breaking $100, simultaneous attacks by Hezbollah and Houthis, reports of mines discovered in the Strait of Hormuz
Key Triggers to Watch
- 48-hour ultimatum deadline and US military's decision on action: Around March 25, 2026 (48 hours after the statement)
- Iran's retaliatory actions (missile launches, show of force in the strait, activation of proxy forces): Within 24-72 hours after US military action
- Convening of UN Security Council emergency meeting and voting on resolution: By end of March 2026
- Success or failure of mediation diplomacy by China, Oman, Qatar, etc.: April-May 2026
- Crude oil prices breaking $100 and countries' decisions on strategic petroleum reserve releases: Late March to early April 2026
🔄 Tracking Loop
Next Trigger: Arrival of Trump's 48-hour ultimatum deadline (around March 25, 2026) — whether the US military actually proceeds with an attack or extends/modifies the deadline will be the turning point for all scenarios.
Continuation of this pattern: Tracking Theme: Strait of Hormuz Crisis and the Reordering of Middle East Energy Order — The next key milestones are the US military's decision on action after the 48-hour deadline (March 25), followed by a UN Security Council emergency meeting (end of March), and the success or failure of mediation diplomacy (April-May).
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