They can saturate the defences by having more re-entry vehicles than the US can ever hope to defend against
On the 75th anniversary of North Korea's ruling party, Pyongyang unveiled a weapon that quietly redraws the boundaries of nuclear deterrence. The Hwasong-16, the world's largest road-mobile intercontinental ballistic missile, carries not one but potentially four warheads — a design that transforms the arithmetic of defence and offence alike. What was displayed on a parade ground is, at its core, a message to Washington: the gap between threat and consequence has narrowed considerably.
- North Korea rolled out the Hwasong-16 ICBM at a military parade, a missile experts say represents the most significant leap in Pyongyang's nuclear capability in years.
- At 26 metres long and capable of carrying up to four nuclear warheads, the missile is engineered specifically to overwhelm US missile defence systems by flooding them with more targets than they can intercept.
- The sheer scale of the display — four missiles on never-before-seen 11-axle trucks — signals that North Korea's weapons programme never paused, regardless of diplomatic overtures from Washington.
- A live test remains unlikely given sanctions and the political cost to Trump's diplomacy narrative, but experts warn the missile's strategic effect is already real: the balance of threat on the peninsula has shifted.
On a parade ground in Pyongyang, North Korea marked the 75th anniversary of its ruling Workers' Party by rolling out the Hwasong-16 — a missile that weapons experts say fundamentally changes the nuclear equation between Pyongyang and Washington.
Stretching roughly 26 metres and wider than its predecessor, the Hwasong-16 is considered the largest road-mobile ICBM of its kind in the world. Four of them appeared in the parade, each carried on an 11-axle truck never seen before. But its size is not the most consequential thing about it — its payload is. Analysts estimate it can carry up to four nuclear warheads on a single missile, a design borrowed from Soviet strategic logic: rather than building more missiles, load each one with more warheads.
That shift matters enormously for defence calculations. Under current US systems, North Korea would need roughly eleven single-warhead missiles for even a one-in-three chance of a successful strike. A four-warhead missile collapses that equation. "They can saturate the defences by having more re-entry vehicles than the US can ever hope to defend against," said Ankit Panda of the Carnegie Endowment for International Peace. Weapons expert Melissa Hanham called it simply "a monster."
Kim Jong-un, speaking at the parade, framed his arsenal as defensive — but warned that any military provocation would be met with pre-emptive and overwhelming force. Whether the Hwasong-16 will ever be test-launched remains uncertain; doing so would violate sanctions and embarrass Trump's diplomatic claims. Still, retired CIA analyst Bruce Klingner offered a stark conclusion: "The clear message was that, counter to US claims, the North Korean nuclear threat has not been solved."
On a parade ground in Pyongyang, North Korea's military rolled out a new intercontinental ballistic missile that weapons experts say represents a significant leap in the country's nuclear capability. The Hwasong-16, displayed during celebrations marking the 75th anniversary of the ruling Workers' Party, is built to carry multiple atomic warheads on a single projectile—a design choice that fundamentally changes how it might penetrate American missile defences.
The missile stretches roughly 26 metres long, making it about two to three metres longer than its predecessor, the Hwasong-15, which North Korea tested in November 2017. It is also wider, and experts consider it the largest road-mobile intercontinental ballistic missile of its kind anywhere in the world. Four of the new missiles appeared in the parade, each mounted on an 11-axle truck that had never been seen before. The sheer scale of the system—both the weapon itself and the machinery required to move it—underscored the resources Pyongyang has devoted to its nuclear programme.
What makes the Hwasong-16 strategically significant is not just its size but its payload capacity. Ankit Panda, a senior fellow at the Carnegie Endowment for International Peace and author of a book on North Korea's nuclear arsenal, estimates the missile could carry as many as four warheads. This matters because it changes the mathematics of defence. Under current US missile defence systems, North Korea would need to launch roughly eleven single-warhead missiles to have even a one-in-three chance of getting at least one through to detonate over an American city. With four warheads on a single missile, the odds shift dramatically in Pyongyang's favour. "They can saturate the defences by having more re-entry vehicles than the US can ever hope to defend against," Panda said during a web seminar hosted by a South Korea-based news outlet.
The strategic logic behind this design reflects lessons North Korea apparently drew from the Soviet Union: it is more efficient to add multiple warheads to one system than to build many more missiles. If North Korea has doubts about whether each warhead will function perfectly, loading several onto one missile increases the probability that at least one will work. "If the North Koreans have questions about the performance of their own re-entry vehicles, putting multiple re-entry vehicles on a ballistic missile simply increases the chances that one of those will successfully detonate," Panda explained.
Weapons experts assess that the Hwasong-16 could deliver several thousand pounds of payload anywhere within the continental United States. Melissa Hanham, a weapons expert and deputy director of the Open Nuclear Network, called the missile "a monster." Another analyst suggested it could reach the entire US with either one very large nuclear warhead or multiple smaller ones. A former US intelligence officer estimated the missile's yield at more than 2,000 megatons—a figure that underscores the destructive potential of what North Korea has built.
During his speech at the parade, Kim Jong-un said he would only use his arsenal if provoked, but added a warning: "If any forces try to use their military power against us, I will pre-emptively mobilise our most powerful offensive force and punish them." The statement reflected North Korea's long-standing doctrine of deterrence through the threat of overwhelming retaliation.
Whether North Korea will actually test the Hwasong-16 remains uncertain. A test launch would violate international sanctions and would undermine President Trump's claims that his personal diplomacy had convinced Kim to halt long-range missile tests. Experts believe the engines may have been tested in December, but the missile's actual performance cannot be assessed without a full launch. If North Korea did test it, analysts estimate the missile would reach an apogee of around 5,000 kilometres—roughly twelve times higher than the International Space Station.
Retired CIA analyst Bruce Klingner of the Heritage Foundation offered a blunt assessment: "The clear message was that, counter to US claims, the North Korean nuclear threat has not been solved." The appearance of the Hwasong-16 suggested that whatever diplomatic progress had been claimed, North Korea's weapons programme had continued advancing, narrowing the technological gap between Pyongyang and Washington in ways that fundamentally altered the strategic balance on the peninsula and beyond.
Notable Quotes
They can saturate the defences by having more re-entry vehicles than the US can ever hope to defend against— Ankit Panda, Carnegie Endowment for International Peace
The clear message was that, counter to US claims, the North Korean nuclear threat has not been solved— Bruce Klingner, Heritage Foundation
The Hearth Conversation Another angle on the story
Why does it matter that this missile can carry multiple warheads instead of just one?
Because it's about overwhelming the other side's defences. The US has systems designed to shoot down incoming missiles, but they have limits. If North Korea launches one missile with four warheads instead of four missiles with one warhead each, it's much harder to stop them all.
So it's a numbers game?
Exactly. And it's a game where North Korea just changed the rules in its favour. With single warheads, they'd need to launch many more missiles to have a real chance of getting through. Now they can do more damage with fewer launches.
What about testing it? Why haven't they?
Because a test would be a political problem. Trump claimed he'd stopped North Korea's missile tests through diplomacy. A test would prove that wasn't true. And it would violate international sanctions. So North Korea builds the missile, shows it off, but doesn't fire it—at least not yet.
Is this a new threat, or just a bigger version of what they already had?
It's both. The Hwasong-15 was already capable of reaching the US. But this one is larger, can carry more warheads, and suggests North Korea's programme is still advancing. It's not a new threat so much as a more sophisticated one.
What do American defence officials say?
They're concerned. The consensus among experts is that North Korea has closed the gap with the US more than Washington wants to admit. The missile's appearance at that parade was meant to send exactly that message.