N.Korea CAUGHT Spying on Neighbors

North Korea now has enough nuclear material for up to 90 warheads, and it is building the capacity to make the problem significantly worse — fast.

Story Snapshot

The Federation of American Scientists estimates North Korea has assembled around 50 nuclear weapons and can build six more every year.
A new reactor at Yongbyon could produce four to five times more plutonium than the current facility once it goes online.
North Korea publicly displayed at least 10 small tactical nuclear warheads in March 2023, signaling it wants weapons ready for battlefield use.
Russia is trading missile technology to North Korea in exchange for artillery shells, giving Pyongyang better delivery accuracy for its growing arsenal.

Six Tests, One Clear Pattern of Progress

North Korea ran six underground nuclear tests between 2006 and 2017. The first blast was less than one kiloton — roughly a firecracker by nuclear standards. The last one registered as high as 250 kilotons. That is more than 16 times the power of the bomb dropped on Hiroshima. Each test taught Kim Jong-un’s weapons teams something new, and the yield jumps show they were learning fast.

The U.S. Defense Intelligence Agency concluded in August 2017 that North Korea had already built a miniaturized nuclear warhead small enough to fit inside a missile. That was eight years ago. The program has not stood still since then. The Federation of American Scientists now estimates the country has produced enough fissile material for up to 90 warheads and has likely assembled around 50 of them.

Congress’s own research arm confirmed that North Korea described its most recent tested device as a hydrogen bomb — a two-stage thermonuclear warhead — designed for use on an intercontinental ballistic missile. If that claim holds up, Pyongyang is not just building more bombs. It is building bigger ones.

The Reactor That Could Change the Math

The most alarming part of North Korea’s expansion is not what it has today. It is what it is building for tomorrow. The Experimental Light Water Reactor at Yongbyon has been under construction for years and is running behind schedule. But analysts say it appears largely finished. Once it goes online, it could produce roughly 20 kilograms of plutonium per year — four to five times the output of the aging 5-megawatt reactor already running there.

More plutonium means more bombs, and it means them faster. The Institute for Science and International Security estimates North Korea can already add six warheads per year to its stockpile. A working new reactor could push that number sharply higher. That is not a distant threat. It is a near-term one, and the window to prevent it through diplomacy is closing.

Tactical Warheads and a Dangerous New Display

On March 24, 2023, North Korea unveiled a weapon called the Hwasan-31 tactical nuclear bomb. State media showed at least 10 of the devices, each estimated at just 40 to 50 centimeters in diameter. The message was clear: these are not city-busting strategic bombs meant to threaten Washington. They are battlefield weapons designed to use against South Korean or U.S. forces in a regional conflict. That is a meaningful shift in how North Korea presents its nuclear posture.

To be fair, no one outside Pyongyang has independently confirmed those warheads are real, functional devices. No test of a tactical warhead has taken place. But the display fits a broader pattern. Since 2023, North Korea has shown off centrifuge halls, small reactors, and production lines in a way it never did before. Whether the warheads are fully operational or not, the intent is unmistakable — and so is the direction of travel.

Russia’s Help Makes a Bad Situation Worse

North Korea is not building this arsenal alone. Russia has been providing missile blueprints and naval technology to Pyongyang in exchange for artillery shells used in Ukraine. That trade gives North Korea access to guidance improvements that make its missiles more accurate. It is a straightforward exchange of resources, and both sides benefit. Russia gets ammunition for a grinding land war. North Korea gets technology that makes its nuclear delivery systems harder to dismiss.

Meanwhile, China has quietly dropped the word “denuclearization” from joint statements with Kim Jong-un, signaling that Beijing no longer treats North Korea’s nuclear status as something to reverse. Russia and China both hold veto power at the United Nations Security Council, which means no new sanctions or enforcement resolutions can pass. The international pressure system that once slowed Pyongyang’s program has effectively broken down. North Korea is expanding its arsenal in a permissive environment, and the world has fewer tools than ever to stop it.