The Law of Diminishing Returns: Why Iran Can't Close the Strait

For months the Strait of Hormuz was treated as Iran’s ultimate card — a chokepoint that could shut down a fifth of the world’s oil at will. The reality was more complicated.

This episode of Global Risk Profile examines how a systematic U.S. campaign against Iranian sensors, escorts, mines, and insurance barriers gradually eroded that leverage.

It also looks at why public shipping data lagged, why a convenient narrative of Iranian success and American failure lasted as long as it did, and the broader pattern that appears whenever coercive power is actually used at scale.

From the 1973 oil embargo to Russia’s gas cut-offs and China’s rare-earth restrictions, the sequence repeats: the threat is strongest while it remains latent. Once exercised, it creates the strongest incentive for the other side to neutralize it.

We also cover what remaining levers does Iran still hold — and how durable are they?

Chapters:
00:00 Introduction
02:48 How the Threat Has Been Eroded
08:31 Why Public Perception Lagged
11:43 The General Principle
13:24 Other Examples
17:12 Remaining Iran Levers and Their Limits


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