China's economic rise was enabled by the post-WWII globalized structure the U.S. created. The U.S. Navy's protection of sea lanes gave China unprecedented coastal security and access to global markets, making its modern form possible. Without it, China would likely collapse.

Despite the Strait of Hormuz closure being a long-theorized scenario, the US military response was 'insufficient' and lacked preparedness. Iran achieved a near-total shutdown with minimal force, relying on the *threat* of attack, revealing a significant gap in US strategic readiness.

Major container lines will divert entire fleets on longer, more expensive routes around continents based solely on the threat of attack, as seen with the Houthis in the Red Sea. The perception of risk, not just the occurrence of incidents, is a primary driver of costly, system-wide disruptions in logistics.

A likely outcome of the conflict is Iran establishing control over the Strait of Hormuz and charging tolls for passage. This would mirror Russia's control over the Northern Sea Route, fundamentally altering freedom of navigation and creating a new economic reality where a state actor monetizes a critical global chokepoint.

The true 'mega risk' is not a single policy but a fundamental shift in the US global role. The post-1945 global economic system, including free trade and dollar dominance, has been built on a foundation of US security and leadership. If that leadership is withdrawn, the entire international order could change fundamentally.

Ed Luttwak identifies a recurring historical pattern of self-sabotage. Imperial Germany challenged the British Royal Navy, which protected its global commerce. Today, China challenges the US Navy, which secures the sea lanes vital for Chinese trade. This is a recurring strategic error driven by a misplaced desire for military parity.

The successful closure of the Strait of Hormuz, a critical global choke point, with relatively little military effort creates a permanent change in risk assessment. This 'black swan' event proves the vulnerability of global supply chains, forcing nations and companies to rethink and de-risk their long-term strategies, regardless of when the strait reopens.

The U.S. established the global order not through force, but by offering a deal: it would guarantee global security for shipping and keep its markets open, provided allies allowed the U.S. to write their security policies. This successfully aligned major world powers under U.S. command against the Soviets.

Iran employs inexpensive weapons against shipping in the Strait of Hormuz. This asymmetric strategy avoids direct military confrontation while making the risk too high for insured commercial vessels, effectively closing the strait without a formal blockade.