By: Mohammad Mohammadi Sani, Analyst of Iranian Foreign Policy and Professor of Middle East Studies
Iran’s Strategic Choices in the Face of the Emerging US Maritime Siege Doctrine
The re-emergence of a maritime-centric pressure doctrine under Donald Trump represents one of the most consequential shifts in Washington’s Iran strategy since the termination of the JCPOA framework. After failing to operationalize a direct military confrontation against Iran, the Trump administration recalibrated toward a classical tool of coercion long present in US strategic thought: the economic siege.
Far from being a symbolic gesture, the effort to constrict Iran’s maritime access in and around the Gulf of Oman should be interpreted as the backbone of a renewed coercive architecture designed to amplify Iran’s economic vulnerabilities, exhaust its resiliency mechanisms, and shape its internal political environment through externally induced constriction.
1. The Strategic Logic of the US Siege Approach
At the heart of the emerging US posture lies a simple inference:
Iran’s geopolitical influence is durable; its deterrent power is significant; its society is resilient—but its economy, due to a combination of sanctions, structural constraints, and external dependencies, constitutes a pressure point.
This logic motivates a transition from short-cycle military confrontation to long-cycle attrition. The assumption in Washington is that a sustained maritime squeeze—under the cover of “security operations,” “counter-proliferation measures,” or “sanctions enforcement”—can gradually erode Iran’s ability to monetize its energy resources, access global markets, and maintain stable domestic macroeconomic conditions.
In this framework, maritime interdiction becomes a multi-layered coercive tool:
- It aggregates with financial sanctions to produce compounding effects.
- It disrupts predictable commercial flows, creating higher transaction costs.
- It signals to regional allies that the US is prepared to dominate the operational environment beyond the Strait of Hormuz.
- It creates psychological pressure inside Iran by targeting essential economic lifelines.
But the deeper aim is political. Washington’s strategic bet is that growing economic strain generates domestic grievances which—if sustained long enough—may constrain Iran’s foreign policy bandwidth or even alter its internal political equilibrium.
Seen through this prism, the maritime siege is not an auxiliary measure; it is the strategic center of gravity of the Trump-era Iran policy.
2. The Risk Calculus: Why Passive Containment Is Not an Option for Iran
From Iran’s vantage point, the threat is not merely the immediate economic losses induced by interdictions or logistical disruptions. Rather, it is the structural danger of enabling the US to normalize a siege posture in the Gulf of Oman. If left unchallenged, the US could institutionalize a semi-permanent enforcement regime via:
- multinational naval task forces,
- layered intelligence-surveillance networks,
- coercive partnerships with regional actors,
- integration of sanctions enforcement with maritime operations.
Such normalization would amount to a quasi-blockade—a slow, grinding form of coercion capable of imposing cumulative economic deprivation more destructive than a single kinetic conflict. Unlike war, which has a definable timeline and often produces geopolitical recalibration afterward, a normalized siege generates “permanent instability,” where economic life becomes unpredictable and national planning becomes impossible.
Thus, from a policy standpoint, strategic inertia equals strategic defeat. Iran must shape the environment rather than merely react to it.
3. Pathways for Strategic Countermeasures
Iran’s policy options can be categorized into five broad families. These options are not mutually exclusive; a sophisticated strategy may combine elements of each.
(A) Reconfiguring Economic Geography: Bypassing Hormuz Through Eurasian Corridors
Iran’s structural over-reliance on the Strait of Hormuz is both a geographic inevitability and a strategic vulnerability. To dilute US coercive capacity, Tehran must accelerate the development of alternative routes.
Key components include:
- Eastern rail corridors toward China through Turkmenistan (north-eastern axis)
– Economically feasible in the medium term
– Integrates Iran into the northern branch of the Belt and Road network
– Offers relative insulation from maritime disruption
- Rail and road expansion via Pakistan (south-eastern axis)
– Connects Iran to Gwadar–Xinjiang corridors
– Provides Iran with redundancy in eastbound logistics
– Presents political challenges but high long-term payoff
The strategic dividend is not the replacement of maritime capacity—impossible in the near term—but the diversification of strategic exposure. The more Iran embeds its trade into Eurasian supply chains, the harder it becomes for Washington to impose an airtight siege.
(B) Imposing Reverse Vulnerabilities: Targeting Persian Gulf Rivals’ Alternative Routes
While the US seeks to circumnavigate Iran’s leverage over Hormuz, Persian Gulf rivals have invested heavily in creating routes that bypass this chokepoint. The most significant among them is the Abqaiq–Yanbu pipeline system on the Red Sea coast of Saudi Arabia.
This infrastructure is strategically vital because:
- It moves a substantial portion of Saudi oil exports outside the maritime domain vulnerable to Iranian influence.
- It is integrated into a broader US–Saudi energy-security architecture.
- It reduces the systemic relevance of the Strait of Hormuz.
If Iran raises the cost or unpredictability of such infrastructure—whether kinetically, cybernetically, or through grey-zone pressure—it compels Washington and its partners to internalize a harsher cost structure for their current strategy. Iran would, in effect, be reminding adversaries that strategic asymmetry cuts both ways.
(C) Diluting the Siege Through Third-Party Commercial Actors
International maritime commerce involves a diverse ecosystem of shipping companies, insurers, port operators, and state-backed fleets. Not all of them are aligned with US foreign policy priorities.
Iran can exploit this by:
- facilitating opaque shipping partnerships;
- offering commercial incentives for non-Western fleets;
- using re-flagging strategies;
- coordinating with states that reject US extraterritorial sanctions.
This creates enforcement ambiguity and stretches US monitoring capacity. Washington must then decide between escalating interdictions—risking conflict—or tolerating partial leakage.
(D) Controlled Maritime Escalation: Challenging US Naval Dominance
Iran’s naval and missile capabilities provide credible tools to contest US coercive operations in the Gulf of Oman. The aim would not be large-scale confrontation but precision signaling:
- calibrated friction through non-lethal engagements;
- interference with US enforcement vessels;
- display of anti-access/area denial (A2/AD) posture;
- limited deterrence episodes designed to highlight escalation risks.
For Washington, even the possibility of escalation to a regional conflict forces strategic reconsideration. The US has historically shown reluctance to ignite a large-scale war with Iran, especially when outcomes are uncertain and political dividends are ambiguous.
(E) Diplomatic Off-Ramps: Negotiation Under Siege Conditions
Theoretically, a political agreement with the United States could terminate the siege. Practically, deep structural disagreements, ideological asymmetries, and low trust make such a scenario highly improbable in the current cycle.
Negotiation remains a tactical hedge—useful for shaping the international narrative, dividing Western allies, and demonstrating diplomatic maturity—but not reliable as a near-term exit.
4. The Trump Administration’s Time Constraints
A critical and frequently ignored dimension of this crisis is the temporal limitation facing Trump. Sustaining a complex maritime siege is politically costly for any US administration:
- It requires continuous naval presence.
- It risks military mishaps with global consequences.
- It creates friction with commercial actors.
- It invites Congressional scrutiny.
- It competes with other global priorities.
If results remain inconclusive, the strategy becomes harder to justify domestically. Trump will thus face a limited window to demonstrate success before he must either escalate dramatically or retreat toward diplomacy.
His established behavioral pattern suggests he will:
(1) avoid acknowledging strategic defeat;
(2) escalate episodically in search of leverage;
(3) maintain pressure until the last possible moment.
This dynamism creates both risk and opportunity for Iran. If Tehran withstands the initial shock and gradually raises the cost for Washington, the siege may lose momentum before delivering the outcomes the US seeks.
5. Strategic Outlook: Toward a Long War of Endurance and Counter-Leverage
The evolving confrontation is not a single crisis but a multi-phase competition of resilience. Iran’s objective is to deny the US a stable coercive architecture; Washington’s objective is to shape Iran’s strategic behavior via sustained economic deprivation.
Iran’s optimal strategy rests on three pillars:
- Diversification of economic and logistical channels.
- Cost imposition against regional and global enablers of the siege.
- Calibrated assertiveness to prevent normalization of US naval dominance in the Gulf of Oman.
If implemented coherently, these pillars can transform the maritime siege from an American asset into a long-term liability—one that erodes US credibility, drains resources, and deepens regional uncertainty for America and its allies.