The global energy supply chain relies on a single, twenty-one-mile-wide chokepoint where the logic of traditional sovereignty is currently being challenged by a proposed shift toward bilateral co-management. Donald Trump’s suggestion that the Strait of Hormuz could be jointly controlled by his administration and the Iranian leadership represents more than a rhetorical flourish; it signals a departure from the "Carter Doctrine," which established the Persian Gulf as a zone of vital U.S. national interest to be defended by any means necessary, including military force. To analyze the viability of such a shared control model, one must deconstruct the maritime logistics, the legal framework of "Innocent Passage," and the economic risk premiums that dictate global oil pricing.
The Triple Constraint of Hormuz Logistics
The Strait of Hormuz functions as the world's most sensitive valve. Approximately 20% of the world’s total oil consumption—and nearly one-third of all seaborne traded oil—passes through this corridor daily. The operational reality of the Strait is governed by three non-negotiable constraints:
- Geographic Narrowness: While the Strait is 21 miles wide at its narrowest point, the shipping lanes consist of two two-mile-wide channels (one inbound, one outbound) separated by a two-mile buffer zone. These lanes fall within the territorial waters of Oman and Iran.
- Hydrological Complexity: The depth and current patterns limit the maneuverability of Ultra Large Crude Carriers (ULCCs), making them "sitting ducks" for asymmetric naval tactics or mine-laying operations.
- Legal Ambiguity: Under the United Nations Convention on the Law of the Sea (UNCLOS), ships enjoy the right of transit passage. However, Iran has not ratified UNCLOS, occasionally asserting its right to restrict "non-innocent" passage, creating a constant friction point with international law.
A "joint control" agreement would theoretically aim to stabilize these constraints by aligning the incentives of the primary regional power (Iran) with the primary global security guarantor (the U.S.).
The Economic Risk Function: Quantifying "Joint Control"
In a standard market, the price of oil includes a "geopolitical risk premium." This premium expands when the threat of a closure in the Strait increases. The logic behind a bilateral management structure is to internalize this externality.
If the U.S. and Iran were to coordinate on "controlling" the Strait, the cost-benefit analysis for global markets shifts from a state of Active Deterrence (high military expenditure, high volatility) to Cartelized Security (lower military expenditure, potential for price manipulation). This transition introduces a new set of variables:
- Insurance Premiums (Hull and Machinery): Currently, Lloyd’s of London and other insurers spike rates during periods of U.S.-Iran tension. A joint agreement could theoretically flatten this curve, provided the agreement is perceived as durable.
- The Escrow of Compliance: For Iran, joint control serves as a mechanism for sanctions relief. For the U.S., it serves as a mechanism for regional drawdown. The failure of either party to meet "management" obligations would trigger an immediate and catastrophic re-pricing of energy futures.
Structural Impediments to Bilateral Enforcement
Proposing joint control ignores the existing multilateral dependencies that keep the Strait open. The U.S. does not act in a vacuum; it leads the International Maritime Security Construct (IMSC). Transitioning to a G2-style arrangement with Iran would necessitate the dismantling or sidelining of several key alliances.
The Problem of Regional Sovereignty
The Strait is not a bilateral corridor. Oman controls the Musandam Peninsula, which forms the southern bank of the Strait. Any "joint" U.S.-Iran agreement that excludes Omani interests or overrides Omani territorial claims would violate the foundational principles of Westphalian sovereignty and likely drive Gulf Cooperation Council (GCC) states toward alternative security umbrellas, such as those offered by China or Russia.
Asymmetric Escalation Mechanics
The Iranian naval strategy is built on the concept of "Fast Inshore Attack Craft" (FIAC) and shore-based anti-ship cruise missiles. This is a denial-of-access strategy. Conversely, the U.S. Fifth Fleet relies on high-end, blue-water capabilities designed for power projection. Joint control requires a synchronization of these two diametrically opposed naval doctrines. It is difficult to define how a "joint" patrol would handle a third-party provocation, such as a non-state actor attack or a stray mine. The lack of a unified command-and-control (C2) structure creates a "bystander effect" where neither party takes responsibility, or worse, both parties blame each other for security lapses.
The Revenue Trap and Export Leverage
Iran’s primary leverage in the Strait is the threat of closure. If Iran enters a joint management agreement, it effectively trades its "nuclear option" of closing the Strait for a seat at the table. This is a diminishing-returns strategy. Once the threat is neutralized through cooperation, Iran’s leverage over the international community decreases.
From the U.S. perspective, managing the Strait with the "Ayatollah" creates a domestic political liability. It validates the Islamic Revolutionary Guard Corps (IRGC) Navy as a legitimate partner in international maritime law. This legitimacy is a non-monetary asset that Iran prizes highly, as it complicates the application of future "maximum pressure" campaigns.
Strategic Disruption: The China Factor
China is the largest importer of oil passing through the Strait of Hormuz. Any U.S.-Iran bilateralism would be viewed in Beijing as a hostile attempt to control the Chinese energy umbilical cord. If the U.S. and Iran "jointly control" the flow of oil, they effectively hold the power to throttle the Chinese economy.
This creates a second-order effect: China would likely accelerate the development of the China-Pakistan Economic Corridor (CPEC) and pipelines through Central Asia to bypass the Strait entirely. The very act of attempting to stabilize the Strait through bilateralism could trigger a permanent shift in trade routes, eventually rendering the Strait less relevant to global geopolitics, though no less dangerous.
Execution Framework: A Three-Tiered Escalation
Should a "joint control" policy move from rhetoric to reality, it would follow a specific implementation path:
- Technical Deconfliction: The establishment of a "hotline" or shared maritime operations center to prevent accidental skirmishes between the IRGC-N and the U.S. Coast Guard/Navy assets.
- Shared Regulatory Oversight: Jointly issuing "Notices to Mariners" (NOTAMs) and coordinating on the removal of "dark fleet" tankers that bypass sanctions, which would require the U.S. to relax its own enforcement of those same sanctions.
- Phased Militarization: The eventual withdrawal of heavy U.S. carrier strike groups in exchange for "light-footprint" monitoring, leaving the physical policing of the lanes to Iranian assets under U.S. satellite and drone surveillance.
The fragility of this model lies in its binary nature. Unlike a multilateral framework where multiple stakeholders (UK, France, Japan, UAE) provide a buffer, a bilateral agreement is only as strong as the personal relationship between the two leaders at the top.
The move toward joint control represents a pivot toward "Realpolitik" where the U.S. accepts a multi-polar reality in the Middle East. However, the cost of this acceptance is the abandonment of the "Freedom of Navigation" principle as a universal right, transforming it instead into a negotiated commodity. Any strategist must prepare for a scenario where the Strait of Hormuz is no longer a "commons" but a "joint venture," subject to the volatility of political whims rather than the stability of international law.
The strategic play for energy importers and global logistics firms is to treat "joint control" as a precursor to localized hegemony. This necessitates a diversification of transit routes—specifically the expansion of the East-West Pipeline in Saudi Arabia and the Habshan–Fujairah pipeline in the UAE—to mitigate the inevitable "trust shocks" that will occur when the interests of the two controllers diverge. Expect a temporary dip in the risk premium followed by an unprecedented spike the moment the first "joint" protocol is violated.
