How the U.S. Military Is Poised to Enforce Trump’s Blockade | WSJ

Key Concepts

• Maritime Blockade: A naval operation to prevent vessels from entering or leaving specific ports.
• Right of Visit: A legal principle allowing warships to board commercial vessels under specific circumstances.
• Hostile Boarding: A tactical operation involving specialized forces to seize control of a vessel that refuses to comply.
• Power Projection: The capacity of a state to deploy and sustain military forces outside its territory.
• Strait of Hormuz: A critical maritime chokepoint for global oil transit.

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US Naval Strategy and Force Deployment

The United States has initiated a maritime blockade targeting Iranian ports to exert economic and political pressure. To execute this, the US has positioned over 15 warships in the Middle East, strategically operating outside the Persian Gulf and the Strait of Hormuz to mitigate risks associated with proximity to the Iranian coastline.

Key Naval Assets:

• USS Abraham Lincoln (Aircraft Carrier): Serves as a primary base for aerial operations. Its large flight deck allows for the deployment of helicopters to conduct aerial boardings, a tactic previously utilized during tanker seizures near Venezuela.
• USS Tripoli (Amphibious Assault Ship): Functions as a "mini aircraft carrier." It carries a specialized Marine unit trained in ship interception and can deploy boarding teams via helicopters or small watercraft.
• Guided Missile Destroyers: These vessels provide versatility, utilizing small flight decks for helicopter launches or sailing alongside commercial vessels to "marshal" them—forcing them to change course or stop movement.
• Submarines: Deployed for secretive surveillance and support roles within the region.

Operational Methodologies

The US approach to the blockade involves a tiered escalation of force:

1. Right of Visit: Warships approach commercial vessels to conduct standard inspections.
2. Marshalling: Using destroyers to physically block or escort vessels into designated areas.
3. Hostile Boarding: If a vessel resists, the US deploys highly trained Marines or Special Operations Forces (e.g., Navy SEALs) to seize control.

Strategic Flexibility:

• Geographic Range: Interceptions are not limited to the immediate vicinity of Iran. The US may wait until vessels reach the Indian or Pacific Oceans to conduct boardings, as seen in previous operations involving tankers fleeing the Venezuelan blockade.
• Land-Based Support: Operations could be facilitated by ground-based assets if regional allies, such as Saudi Arabia or the UAE, grant the US access to their territory.

Legal and Strategic Perspectives

The primary argument presented is that the blockade is a necessary measure to prevent Iran from "blackmailing or extorting the world" through its economic activities.

• Precedent: The US cites the boarding of an oil tanker near Iceland—which had fled a Venezuelan blockade and sought Russian protection—as evidence of its capability to conduct long-range, high-stakes interceptions.
• Economic Impact: Analysts emphasize that the efficacy of a blockade is not immediate. However, the "threat of interception" alone serves as a powerful deterrent, potentially isolating Iran from the global economy by increasing insurance costs and discouraging shipping companies from entering Iranian waters.

Conclusion

The US blockade of Iran is a calculated application of naval power designed to isolate the nation economically. By leveraging a combination of aircraft carriers, amphibious assault ships, and special operations forces, the US maintains the ability to intercept vessels far from the conflict zone. While the physical blockade is the primary mechanism, the psychological impact of these operations is intended to serve as a significant deterrent, effectively disrupting Iran's maritime trade routes and global economic integration.