North Korea’s Nuclear-Powered Submarine: A New Threat Below the Surface?

Screen Shot of AP Story Release

Introduction

In a move that could reshape the balance of power in the Indo-Pacific, North Korea has unveiled a nuclear-powered submarine under construction for the first time. The announcement, accompanied by images of Kim Jong Un inspecting the shipyard, raises serious questions about regional security, technological proliferation, and the future of naval warfare.

For years, North Korea’s submarine fleet was seen as aging and limited in capability. This new development, however, suggests a leap forward—one that could allow Pyongyang to launch nuclear missiles from stealthy underwater platforms. If confirmed, this would be a major strategic shift, making it harder for the U.S. and its allies to detect and respond to potential attacks.

So how did a heavily sanctioned nation achieve this milestone? And more importantly—what does it mean for the United States, its allies, and the U.S. Navy?

Key Takeaways

  • North Korea has publicly showcased a nuclear-powered submarine under construction, potentially capable of carrying nuclear-capable missiles.
  • Experts speculate that North Korea may have received Russian technological assistance in exchange for supporting Russia’s war efforts in Ukraine.
  • If deployed, this submarine would significantly enhance North Korea’s second-strike capability, making its nuclear deterrence more credible.
  • The development complicates regional security and raises concerns about a growing alliance between North Korea and Russia in military technology sharing.

Why Americans Should Care

For many Americans, North Korea’s military developments may seem like distant problems. But in reality, this new submarine could directly impact U.S. national security.

A nuclear-powered submarine allows North Korea to extend its reach beyond the Korean Peninsula. Unlike land-based missile systems, which can be monitored through satellites and surveillance, a submarine carrying nuclear weapons can disappear into the vast ocean, making it nearly impossible to detect before a potential strike.

If North Korea can launch nuclear missiles from an underwater platform, it could target U.S. allies like South Korea and Japan with little warning—or even reach the U.S. mainland in the future. This dramatically raises the stakes and adds another layer of unpredictability to global security.

Implications for the USA

A Strengthened North Korea-Russia Alliance

Reports suggest that Russia may have provided North Korea with reactor technology for this submarine in exchange for conventional weapons or manpower for its war in Ukraine. If true, this signals a growing military partnership between two U.S. adversaries. A stronger North Korea emboldened by Russian support poses a direct challenge to U.S. leadership in the region.

Increased Risk of Nuclear Conflict

North Korea’s ability to launch nuclear strikes from the sea reduces the effectiveness of traditional missile defense systems. A surprise underwater attack would be harder to intercept, increasing the risk of escalation in the event of a conflict.

Undermining U.S. Deterrence

This development challenges the U.S.’s ability to maintain strategic deterrence. If North Korea gains confidence in its second-strike capability, it may be less willing to negotiate or back down from provocations.

Implications for the U.S. Navy

Greater Demand for Anti-Submarine Warfare (ASW)

Detecting and neutralizing enemy submarines is already one of the most complex challenges in naval warfare. The U.S. Navy will need to enhance its ASW capabilities, including deploying more advanced sonar systems, hunter-killer submarines, and aerial surveillance.

Need for Expanded Naval Presence in the Indo-Pacific

A nuclear-powered submarine gives North Korea the ability to operate farther from its shores. The U.S. Navy may need to increase its presence in the region to counter this new threat, requiring more attack submarines, destroyers, and aircraft carriers to maintain sea control.

More Investments in Unmanned and AI-driven Warfare

The future of undersea warfare is shifting toward AI-driven detection and unmanned systems. This new threat underscores the urgency of investing in advanced drone technology, autonomous underwater vehicles (AUVs), and real-time surveillance to track enemy movements.

Conclusion

North Korea’s nuclear-powered submarine is more than just a headline—it’s a wake-up call. It signals a shift in global security, exposing weaknesses in existing defense strategies. The U.S. must recognize this as part of a broader challenge, not only from North Korea but also from the growing military cooperation between adversaries like Russia and China.

America cannot afford to be complacent. A stronger U.S. Navy is essential to maintaining deterrence, securing trade routes, and ensuring that threats like this do not go unchecked. Now, more than ever, investing in naval power is not just a choice—it’s a necessity.


Leadership in the U.S. Navy: Lessons from History and the Stakes Today

The Royal Navy’s execution of Admiral Byng in 1757 reminds us: indecision in war is deadly.
Introduction: The Reality We Face Today
 
The U.S. Navy is undergoing major leadership changes. Reports indicate that the incoming administration’s new Secretary of Defense, Pete Hedgeseth, is making sweeping moves by dismissing top admirals. Whether this signals a strategic reset or a political maneuver, one thing is clear: leadership in the military is under a microscope.
Bill Cullifer, Founder
Bill Cullifer, Founder

In the private sector, where I have spent much of my career, leadership changes are routine—CEOs get fired, boards demand accountability, and shareholders expect results. But in the military, leadership turnover carries far greater consequences—it affects national security, operational readiness, and the morale of those who serve. In a time of rising threats from China, Russia, Iran, and North Korea, America cannot afford indecision or mismanagement at the highest levels of command.

To understand the stakes, we need to examine a historical case of military accountability—one that was as brutal as it was instructive. The execution of Royal Navy Admiral John Byng in 1757 sent a chilling message: failure to act decisively in war could cost you everything. The question for us today is: Are we ensuring accountability, or are we risking unnecessary instability in our naval leadership?

A Harsh Lesson from History: The Execution of Admiral Byng
 
In 1757, Admiral John Byng faced one of the most severe forms of accountability in British naval history. Tasked with defending British interests during the Seven Years’ War, Byng was sent to relieve a besieged British garrison at Minorca. But he was set up for failure—his fleet was under-resourced, and his enemy was well-prepared.
 
Byng engaged the French in battle, but when his fleet suffered heavy damage, he chose to withdraw rather than risk total destruction. His decision, while arguably pragmatic, was viewed as a failure to act decisively in war.
 
The British government, eager to shift blame away from its own missteps, made an example of Byng. He was court-martialed, found guilty under the strict new Articles of War, and sentenced to death by firing squad. His execution was meant to send a message: indecision in battle would not be tolerated.
 
Voltaire, an 18th-century French writer, philosopher, and satirist, famously wrote, “In this country, it is wise to kill an admiral from time to time to encourage the others.” Byng’s fate, while tragic, reinforced a culture of accountability and decisive action in the Royal Navy that lasted for decades.
 
Why This Matters Today: The Cost of Indecision
 
Today, the world is entering a new era of great power competition. The challenges we face are different from those of Admiral Byng’s time, but the stakes are even higher:
 
China is rapidly expanding its navy, militarizing the South China Sea, and challenging U.S. dominance in the Pacific.
Russia is testing Western resolve, using hybrid warfare and maritime brinkmanship to threaten U.S. and allied interests.
Iran continues to harass U.S. forces in the Middle East, while North Korea remains an unpredictable nuclear threat.
 
In this environment, the U.S. Navy must embody decisive leadership at every level—on the bridge, in the boardroom, and in Washington. Hesitation, bureaucratic missteps, or weak decision-making will embolden our adversaries and put American lives at risk.
 
Implications for Americans
 
National Security: A Navy that acts with precision and decisiveness ensures the safety of our nation, our allies, and global trade routes.
Confidence in Leadership: When naval leaders are empowered to act boldly, it strengthens trust between the military and the American public.
Economic Stability: A strong Navy deters conflict, reducing the likelihood of costly, prolonged engagements that drain our national resources.
 
Implications for the U.S. Navy
 
Operational Readiness: Future conflicts will be won by those who can think and act quickly. Our Navy must train, equip, and empower its officers to make bold, effective decisions in real time.
Balanced Accountability: Leadership should be held accountable, but not used as political scapegoats or subject to constant upheaval that weakens continuity and strategy.
Better Strategic Execution: We need faster decision-making at the highest levels to ensure that shipbuilding, force readiness, and modernization efforts align with the evolving threats we face.
 
Message to Our Adversaries: Peace Through Strength—But Make No Mistake
 
Let there be no misunderstanding: Americans for a Stronger Navy is committed to peace through strength.
 
We believe in deterrence, in maintaining stability through overwhelming force, and in ensuring that war remains the last resort, not the first option. But make no mistake—if conflict comes, we do not hesitate.
 
To China, Russia, Iran, and North Korea, we send this message:
 
* We do not hesitate. Our forces are trained to act with aggression and clarity when the situation demands it.
* We hold our leaders accountable—but we stand behind them when they make tough calls. Our commanders must have the authority to act decisively, without fear of political scapegoating or bureaucratic hand-wringing.
* We are prepared. We recognize that war is a dirty business, and we are willing to fight and win on our terms. We do not seek conflict, but we will never back down from defending our nation, our allies, and our interests.
 
Strength is what ensures peace. Weakness invites aggression. The U.S. Navy has been, and will remain, the ultimate deterrent to those who wish to challenge American resolve.
 
Final Thought: The Future of American Naval Power
 
The U.S. Navy is at a crossroads. We face real threats, and we cannot afford indecisiveness or internal instability.
 
History teaches us that leaders must be both decisive and supported. Americans for a Stronger Navy will continue advocating for policies that keep our fleet at peak readiness, hold leaders accountable without undermining stability, and ensure that we project strength at sea and beyond.
 
The time for hand-wringing is over. The time for banging on the table and demanding decisive action is now.
 
We either lead the seas—or someone else will.
 
Join us in this fight. Share this message, support a stronger Navy, and ensure that America’s maritime power remains second to none.
 
Editor’s Note: The status quo isn’t cutting it, and the Navy can’t afford to operate on autopilot. From both an Americans for a Stronger Navy perspective and my personal stance, I want leaders who demand action—admirals who bang on tables, challenge complacency, and push for real solutions. Right now, the Navy is stretched thin, threats are mounting, and bureaucracy is slowing us down. We don’t have the luxury of time. We need decisive leadership, real investment, and a serious commitment to strengthening the fleet—not just rhetoric or incremental tweaks. America’s naval power isn’t guaranteed unless we fight for it. That means confronting tough truths, challenging leadership where necessary, and making it impossible for decision-makers to ignore the urgency of the situation. No more waiting, no more excuses—we need action.