Scarborough Shoal: Tiny Reef, Global Stakes

A Comprehensive Series by Americans for a Stronger Navy

By Bill Cullifer, Founder – Americans for a Stronger Navy

Introduction: Why We’re Launching This Series on Scarborough Shoal

What is Scarborough Shoal?

At first glance, it’s just a triangle-shaped reef in the South China Sea, roughly 120 nautical miles west of Luzon, Philippines. No buildings. No runway. No flag.

Scarborough Shoal, courtesy of the U.S. Navy.

But don’t let its humble appearance fool you.

Scarborough Shoal is one of the most contested flashpoints in the Indo-Pacific. This seemingly minor cluster of rocks and reefs sits at the heart of one of the world’s most vital sea lanes — and could very well be the next spark in a global conflict.

What Prompted This Series

We didn’t choose Scarborough Shoal at random. This series was prompted by a disturbing escalation in Chinese maritime aggression in the South China Sea — specifically at Scarborough Shoal, a small reef with outsized strategic consequences.

Recent satellite photo of Scarborough Shoal showing Chinese vessels surrounding the reef, with overlay graphics indicating vessel positions and types

Recent events that brought this to a head include:

  • A Chinese cutter and guided-missile destroyer collided during a botched blockade attempt of Philippine Coast Guard vessels ten nautical miles off Scarborough Shoal in August 2025.
  • USS Higgins (DDG-76) sailed within 12 nautical miles of Scarborough Shoal conducting a Freedom of Navigation Operation (FONOP) — the first known U.S. military operation in at least six years in these specific waters.
  • Chinese Coast Guard harassment of Philippine resupply missions.
  • Dumping of concrete blocks — a likely signal of future construction.
  • Swarming of the area by Chinese maritime militia vessels.

The Scarborough Shoal is quickly becoming a litmus test for Chinese expansionism and U.S. resolve.

Why Now: The Wake-Up Call

Scarborough Shoal lies just 120 nautical miles off the Philippine coast — well within their Exclusive Economic Zone (EEZ) — and even closer to America’s red lines. When China seized de facto control of the shoal in 2012, the U.S. stood back. Many viewed this as a strategic failure of deterrence.

Now, the world is witnessing the possibility of militarization of the reef — and direct confrontation with a U.S. ally. That makes this more than a regional issue. It’s a crisis in the making.

The 2012 Standoff: A Turning Point

In April 2012, Philippine authorities attempted to arrest Chinese fishermen operating illegally in the shoal. Chinese maritime surveillance ships intervened. A tense standoff ensued, lasting weeks. The U.S. brokered a deal: both sides would withdraw.

The Philippines kept its word. China didn’t.

Instead, China took control of Scarborough Shoal, effectively barring Filipino access ever since. They now patrol it with coast guard cutters, militia fishing boats, and surveillance drones — sometimes even water cannons. Construction may follow.

A Geopolitical Tinderbox in the Sea

The South China Sea is home to trillions of dollars in annual global trade. It’s also flush with resources: fish, gas, oil, and geostrategic leverage. China claims nearly all of it under its so-called “Nine-Dash Line” — a sweeping assertion that ignores international law and overrides the rights of Southeast Asian nations like the Philippines, Vietnam, and Malaysia.

Scarborough Shoal, or Bajo de Masinloc as the Filipinos call it, lies within the Philippines’ exclusive economic zone (EEZ), as defined under the United Nations Convention on the Law of the Sea (UNCLOS). In 2016, the Permanent Court of Arbitration definitively ruled that China’s sweeping claims in the South China Sea had no legal basis under international law.

China’s response? They ignored the ruling entirely and doubled down on their aggression.

My Perspective: This Isn’t Just a Reef

As a former Navy destroyer sailor from the 1970s, I understand how seemingly minor naval flashpoints can quickly spiral. I launched Americans for a Stronger Navy to bridge the gap between what’s happening on the water and what the American public knows.

When I began Americans for a Stronger Navy, I did so because I believed — and still believe — that Americans are not being told the full story.

Scarborough Shoal isn’t on the nightly news — but it should be.

This reef is about more than rocks and water. It’s about:

  • Sovereignty
  • International law
  • Access to critical trade routes
  • Maintaining a rules-based order
  • The failure of deterrence
  • The rise of maritime bullying
  • The fragility of global trade

And the uncomfortable question: Will America act, or will we retreat?

Why Americans Must Pay Attention

Most Americans have never heard of Scarborough Shoal, but they should. Here’s why it matters to you:

  • Over $3 trillion in trade passes through the South China Sea annually.
  • China is testing the boundaries of international law and Western will.
  • Scarborough is a potential trigger point for a wider conflict — even WWIII.
  • The U.S. Navy may be forced to act, and our sailors are on the front line.
  • Success here emboldens China’s tactics elsewhere — Taiwan Strait, East China Sea.
  • Control of Scarborough supports China’s broader Belt and Road Initiative and maritime silk road ambitions.

If you think a shoal doesn’t matter, consider this: $3.4 trillion in global trade flows through the South China Sea every year. China is attempting to rewrite the rules of international waters. And the U.S. Navy — your Navy — is the thin blue line standing in the way.

Coming Up in This Series

  • The history of Scarborough Shoal and how we got here
  • The 2012 U.S.-brokered standoff and its long-term impact
  • The 2016 international arbitration ruling and China’s defiance
  • China’s maritime militia and “gray zone” tactics
  • The importance of fishing rights, seabed minerals, and cable networks
  • Allied response frameworks: QUAD, AUKUS, and Philippines mutual defense commitments
  • The implications for the U.S., our allies, and our Navy
  • Economic warfare potential and leverage tactics
  • Technology, surveillance, and intelligence dimensions
  • WWIII scenarios — and what they could look like
  • Congressional and policy tools available (or missing)
  • What Americans know (or don’t) about this growing threat

Each post will build context and momentum — helping readers understand why this small reef could shape the future of American security strategy in Asia and beyond.

Join the Mission

Understanding Scarborough Shoal is understanding a fault line in today’s global order. This series isn’t just about sounding the alarm — it’s about equipping Americans with insight, history, and facts so we can rally support, demand accountability, and avoid miscalculation.

If we don’t understand where the storm is brewing, we won’t know when to take shelter — or when to stand our ground.

Scarborough Shoal may seem far away. But the values at stake — sovereignty, freedom of navigation, and deterrence — are right at our doorstep.

Not to inflame. Not to fearmonger. But to educate, illuminate, and inspire action.

Please follow along, share with others, and help us shine a spotlight on one of the most important — and most underreported — strategic flashpoints of our time.

Stay with us. Read. Share. Talk about it.

Because understanding this reef might just help us prevent the next war.

A Final Thought

If a reef you’ve never heard of could spark the next major war — dragging America and its sailors into the fight — doesn’t that make it worth understanding?

Let’s chart the course together.

That’s why we launched Charting the Course: Voices That Matter—a 24-part educational series breaking down how we got here, what went wrong, and what must happen next. Our goal is simple: educate the public, connect the dots, and build the support needed to close the readiness gap before it’s too late.

Let’s roll.

Arming for Peace: Why America Must Act Now to Strengthen the Navy and Defend Freedom

A Review of Heritage Foundation Report BG3902 by Americans for a Stronger Navy

Introduction

The Heritage Foundation’s latest report, “Arming for Peace: Expanding the Defense Industrial Base and Arming Taiwan Faster” (BG3902), echoes what Americans for a Stronger Navy has been sounding the alarm on: The threats facing the United States are real, escalating, and dangerously close to overwhelming our current naval capabilities. As Brent Sadler writes, the time for talk has passed. Action is overdue. If we don’t mobilize now, America risks losing the ability to deter war and defend freedom in the Indo-Pacific and beyond.

As Sadler states: “As Americans go about their daily lives unmolested, the world is accelerating in its change—much of it perilous to U.S. national survival.” He warns that “on the back of a decades-long sustained military build-up, China’s military is increasingly confident and willing to directly challenge the U.S.”

His call to action is clear: “The U.S. must restore ebbing national deterrence and prevent a war in Asia—while not ceding its democratic way of life and prosperity for the next generations.”

Key Findings That Should Wake America Up

China is preparing for war. Admiral Davidson’s 2021 warning that China could strike Taiwan by 2027 has not only proven prescient, it’s now backed by an unprecedented military buildup. China has conducted massive joint-force invasion rehearsals and increased provocations around Taiwan. As Brent Sadler put it, “Aggressive maneuvers around Taiwan right now are not exercises, as they call them. They are rehearsals.”

That warning was underscored this week when the Chinese military launched large-scale joint drills around Taiwan, including its Shandong aircraft carrier battle group. According to China’s own Eastern Theater Command, these drills are a “severe warning and forceful containment against Taiwan independence.” With missile forces, air strikes, and blockade rehearsals now unfolding, many in Taiwan — and around the world — are rightfully concerned. Sadler’s insights about China’s evolving risk tolerance add important context to these real-time developments.

Further validating the urgency, the U.S. Naval War College’s China Maritime Report No. 14 found that Chinese analysts themselves believe the PLA has narrowed the gap with the U.S. military, especially in its immediate region. “There is consensus in China that the PLA has narrowed the gap in overall military capabilities with the United States over the last two decades,” the report notes.

Russia and China are approaching U.S. shores. Testimony from U.S. Northern Command chief Gen. Gregory Guillot before Congress confirmed that joint Russian-Chinese military patrols have entered the U.S. Air Defense Identification Zone near Alaska — levels not seen since before the Ukraine war began. One coordinated flight last July saw Russian TU-95 and Chinese H-6 bombers test U.S. response time. This should serve as a wake-up call: our adversaries are not just projecting power near Taiwan, they’re probing U.S. airspace and waters closer to home. As Politico reported, Chinese “dual-use” vessels under scientific pretenses are mapping the Arctic for future military operations.

U.S. deterrence is fading. Years of underinvestment in shipbuilding and naval readiness have created dangerous gaps. Delays in weapons deliveries, inadequate port infrastructure, and a depleted missile defense stockpile are symptoms of a nation unprepared for a prolonged maritime conflict. As Sadler warns, “Failing to act… could result in the most destructive and consequential war the U.S. has ever had to fight.”

The Navy is stretched thin. The U.S. Navy has sustained an aggressive forward presence, but at great cost. Ship wear, sailor fatigue, and insufficient repair capacity are taking their toll. The grounding of the USNS Big Horn disrupted combat ops in the Red Sea, highlighting our logistical fragility. Sadler notes, “This comes at a cost in added wear on the ships and sailors reliant on a logistics infrastructure of ports, support ships, and dry docks too few to assure contested forward naval operations.”

The world is on fire. From Ukraine to the Red Sea to the Arctic, our adversaries are watching and testing U.S. resolve. China, Russia, Iran, and North Korea now operate more boldly, confident in America’s disunity and domestic distraction.

Taiwan is not a distant concern. More than 80,000 Americans live, work, or travel there. A war over Taiwan would drag us into conflict, devastate global supply chains, and send shockwaves through the U.S. economy. As Sadler puts it plainly, “Taiwan is where over 80,000 Americans live, work, or travel on any given day.”

China’s geographic advantage cannot be ignored. According to the CMSI report, Chinese military capabilities are particularly potent within the First Island Chain, which includes Taiwan. “Chinese capabilities may…contest U.S. supremacy in scenarios close to home,” the report warns. That’s where deterrence matters most—and where readiness is most urgently needed.

Why Americans Should Care

This is not just a Navy problem. It’s an American problem. Delays in defense production, weak infrastructure, and an uninformed public are national vulnerabilities. If Americans fail to understand what is at stake, we will fail to hold our leaders accountable. And if we fail to act, we will be forced to react under far worse circumstances.

A strong Navy protects freedom of navigation, global trade, energy security, and the American way of life. Without it, our adversaries will decide what happens in the Taiwan Strait, the Red Sea, the South China Sea — and now, even the Arctic.

What the Navy Needs Now

A modern Naval Act. We need a 21st-century version of the pre-WWII Naval Act to rapidly rebuild shipyards, expand production, and modernize our fleet. Sadler calls this “a promising first step to regain the ability to sustain a wartime economy in a prolonged war with China.”

Real investment in maritime infrastructure. Ports, dry docks, and logistics support are vital national security assets that must be revitalized now.

Faster arms deliveries to Taiwan. The delays in Harpoon, Javelin, and Stinger deliveries must be resolved. Taiwan’s ability to defend itself is our first line of deterrence. Sadler emphasizes that “how the new Administration responds and accelerates the arming of Taiwan will be key in sustaining the military balance and peace in the near term.”

A unified national strategy. We must operate differently — with diplomatic, economic, and military efforts aligned. Naval statecraft must be at the heart of this new Cold War strategy. Sadler emphasizes, “Naval statecraft is the recommended way forward; that is, a maritime strategic framework for using American power.”

The CMSI report reminds us that training, human capital, and logistics remain U.S. advantages. While China may be catching up in hardware, “Chinese training still lags. The gap in the software [human resources and development] is even bigger,” the report notes. But these gaps can close — unless we act now to protect and reinforce our edge.

An Engaged and Educated Public

At Americans for a Stronger Navy, we believe in peace through strength. But strength requires public awareness, buy-in, and civic action. That’s why we launched the Americans for a Stronger Navy Educational Series — to help Americans understand the stakes, the history, and the path forward.

We invite every reader to check out and sign up for the Educational Series on StrongerNavy.org. Learn what makes our Navy vital to our security and prosperity. Share it with others. Talk about it. Get involved.

Conclusion

We are not powerless. But we must not be silent. The Heritage Foundation, the U.S. Naval War College, and recent military testimony to Congress all point to the same reality: America is in the early stages of a long contest with near-peer adversaries, and we must prepare now.

It’s time for Americans to wake up, stand up, and demand a Navy that is ready not just for today’s threats, but tomorrow’s challenges.

America needs a stronger Navy. And the Navy needs a stronger America behind it.