From Selective Restriction to Universal Blockade
Legal Contestation and Third-Party Naval Intervention in the Strait of Hormuz
- Wu, Shaoyuan
Global AI Governance and Policy Research Center, EPINOVA LLC
https://orcid.org/0009-0008-0660-8232
Description
This policy brief analyzes the shift from Iran's selective maritime restriction model to a broader U.S. port-access blockade in the Strait of Hormuz, assessing the legal contestation, systemic externalities, and conditions under which third-party naval intervention may be framed as navigation assurance rather than coercive enforcement.
Abstract
This policy brief identifies a structurally decisive distinction between Iran's bounded selective restriction regime and the United States' system-wide port-access blockade in the Strait of Hormuz. It argues that the expansion from selective interference to universalized exclusion transforms the crisis from a bilateral confrontation into a systemic question of international maritime governance. The brief examines Iran's appeal to the United Nations, the legal basis for third-party naval deployment under transit passage and collective security frameworks, and the operational pathways available to external actors. It concludes that third-party involvement is legally defensible and strategically consequential only when framed as defensive maritime assurance, integrating escort operations, humanitarian support, and maritime domain awareness while avoiding enforcement behavior that could intensify cross-domain escalation.
Files
| Name | Type | |
|---|---|---|
| From Selective Restriction to Universal Blockade Legal Contestation and Third-Party Naval Intervention in the Strait of Hormuz.pdf Full-text PDF of the policy brief | application/pdf | Download |
Keywords
- Strait of Hormuz
- Maritime security
- Maritime blockade
- Port-access blockade
- Selective restriction
- Transit passage
- UNCLOS
- United Nations Charter
- Third-party naval intervention
- Navigation assurance
- Defensive escort
- Maritime domain awareness
- International maritime governance
- Global commons
- Energy security
- Legal contestation
- Extraterritorial enforcement
- Systemic escalation
- MCCM v2.0+
- Cross-domain escalation
- Rules-based maritime order
- Iran
- United States
- EPINOVA
Subjects
- Maritime governance
- International law
- Law of the sea
- Security studies
- Middle East security
- Strategic competition
- Energy chokepoints
- Naval operations
- Conflict escalation
- International institutions
- Global commons governance
- Policy analysis
- Systems analysis
- Geopolitics
Recommended citation
Wu, Shaoyuan (2026), From Selective Restriction to Universal Blockade: Legal Contestation and Third-Party Naval Intervention in the Strait of Hormuz, Policy Brief No. EPINOVA–2026–PB–32, Global AI Governance and Policy Research Center, EPINOVA LLC, https://doi.org/10.5281/zenodo.19568379. DOI: To be assigned after Crossref membership approval.
APA citation
Wu, S. (2026). From selective restriction to universal blockade: Legal contestation and third-party naval intervention in the Strait of Hormuz (Policy Brief No. EPINOVA–2026–PB–32). Global AI Governance and Policy Research Center, EPINOVA LLC. https://doi.org/10.5281/zenodo.19568379. DOI: To be assigned after Crossref membership approval.
Alternate identifiers
| Scheme | Identifier | Description |
|---|---|---|
| DOI | 10.5281/zenodo.19568379 | Zenodo/DataCite DOI stated in the PDF recommended citation |
| DOI | 10.5281/ZENODO.19568379 | Uppercase DOI form from early ORCID-derived metadata record retained for reconciliation |
| ORCID put-code | 211656502 | ORCID Public API record identifier from early metadata |
| EPINOVA policy brief number | EPINOVA–2026–PB–32 | Policy brief number printed in the PDF |
| File name | From Selective Restriction to Universal Blockade Legal Contestation and Third-Party Naval Intervention in the Strait of Hormuz.pdf | Source PDF file name |
| Short title | From Selective Restriction to Universal Blockade | Short form of the policy brief title |
Related works
| Relation | Identifier | Type | Description |
|---|---|---|---|
| Related EPINOVA policy brief providing the MCCM v2.0+ escalation-system framework referenced in the assessment of cross-domain escalation risk. | 10.5281/zenodo.19550886 | ||
| Related EPINOVA policy brief analyzing Iran's logistics adaptation beyond Persian Gulf maritime flows. | 10.5281/zenodo.19562154 |
References
- {'citation': 'United Nations Convention on the Law of the Sea (UNCLOS).', 'type': 'International legal framework referenced in the policy brief', 'url': ''}
- {'citation': 'United Nations Charter, Article 2(4).', 'type': 'International legal framework referenced in the policy brief', 'url': ''}