THE END OF THE MARITIME SECURITY FRAMEWORK

Why the System That Built the Modern World Is No Longer Sustainable

Tom Raquer

Lt. Col. (Ret.), U.S. Air Force

From the series:

After the Winter — Collapse, Spring, and the New First Turning

Published: March 22, 2026

This analysis expands on today’s Substack post, “The Strait and the Citizen,” which examined how distant conflict is experienced domestically.

The System Was Built — Not Given

The modern world didn’t emerge on its own.

It was secured.

For roughly eighty years, the United States enforced something most people rarely think about:

A maritime security framework that kept trade moving, energy flowing, and risk contained.

This wasn’t theoretical.

It was enforced.

Continuously.

And over time, it started to feel permanent.

It isn’t.

What That System Actually Did

The foundation was simple:

Secure the seas.

From that, everything else followed:

• open trade routes
• reliable energy transport
• global supply chains
• economic interdependence

The U.S. Navy didn’t just defend the homeland.

It underwrote global commerce.

That created something historically unusual:

A world where geography seemed to matter less.

Distance looked manageable.

Access looked guaranteed.

Risk looked controlled.

For a while, it worked that way.

The Illusion of Permanence

Over time, people stopped seeing the system as constructed.

It became assumed.

But it depended on conditions:

• American economic strength
• military dominance
• political cohesion at home
• public willingness to sustain global commitments

Remove any one of those—

and the system starts to strain.

We’re starting to see that now.

Where the Strain Is Showing

The pressure isn’t coming from one place.

It’s structural.

Energy chokepoints are still exposed.

Supply chains are long and fragile.

Financial systems are tightly connected.

Allies depend on flows they don’t control.

The Strait of Hormuz isn’t an outlier.

It’s a signal.

It shows how quickly localized disruption can move through a global system.

And once it starts moving, it doesn’t stay contained.

The Internal Constraint

The real shift isn’t just external.

It’s internal.

The United States is entering a period of:

• rising fiscal pressure
• political fragmentation
• declining institutional trust

In a Fourth Turning, this matters more than anything happening abroad.

Because external commitments don’t fail first on the battlefield.

They fail when the society supporting them reaches its limit.

Not suddenly.

Gradually.

The Strategic Inversion

For decades, the maritime framework projected stability outward.

Now it’s starting to do something else.

It’s transmitting instability inward.

Energy disruption shows up in prices.

Financial stress shows up in markets.

Alliance commitments are reflected in domestic political tension.

The system still stabilizes.

But it also burdens.

And that balance is shifting.

Geography Returns

If the framework weakens, geography starts to matter again.

Not as a theory—as a constraint.

Countries fall back on:

• proximity
• resource access
• regional balance

Trade doesn’t disappear.

But it becomes more conditional.

More regional.

More contested.

That’s a different world than the one we’ve been operating in.

Allies and Dependence

Many U.S. allies were built around this system.

They depend on:

• imported energy
• secure sea lanes
• American guarantees

If the framework weakens, their position changes.

So do their incentives.

They may:

• seek regional arrangements
• hedge security relationships
• shift economic alignment

Not because they want to.

Because they have to.

The Strategic Question

This leaves the United States with a real decision.

Not tactical.

Structural.

Continue sustaining a global maritime system at increasing cost—

or adapt to a world where that system can’t be maintained at the same scale.

There isn’t a clean answer.

Only trade-offs.

Conclusion

The maritime security framework didn’t just support the modern world; it also enabled it.

It shaped it.

In many ways, it created it.

But no system holds forever.

The conditions that sustained this one are changing.

And under current internal pressure, it may no longer be sustainable in its current form.

This doesn’t mean collapse.

But it does mean transition.

Question for Strategists

If the United States can no longer fully sustain the maritime security framework—

What replaces it?

Key Points

• The global system depends on secure maritime trade routes
• U.S. power has underwritten that system since World War II
• This role is a strategic choice, not a permanent condition
• Internal pressures are now constraining external commitments
• Chokepoint disruptions reveal systemic vulnerability
• The system is shifting from stabilising to burdening

Sources & Strategic Influences

Maritime Power and Geography

• Alfred Thayer Mahan — The Influence of Sea Power Upon History
• Robert D. Kaplan — The Revenge of Geography

Limits of Strategy and Overreach

• Walter Lippmann — U.S. Foreign Policy: Shield of the Republic

Civilizational and Structural Perspectives

• Samuel P. Huntington — The Clash of Civilisations and the Remaking of World Order

Contemporary Strategy

• Elbridge Colby — The Strategy of Denial

System Data

• U.S. Energy Information Administration (EIA)
• International Monetary Fund (IMF)
• World Bank

About the Author

Tom Raquer is a retired Lieutenant Colonel in the United States Air Force. He is also a former Southeast Asia Foreign Area Officer.

His work focuses on the relationship between domestic legitimacy, global strategy, and systemic economic pressure in modern conflict.

He writes the After the Winter series for First Turning Strategists. In this series, he examines how crisis periods reshape national cohesion. He also explores strategic endurance and the future stability of the American constitutional order.