The most dangerous weapon in the world in 2026 is the Trident II D5, the submarine-launched nuclear missile used by the United States and the United Kingdom. It tops our ranking of the 15 most dangerous weapons ever made, which we score on destructive power, whether the weapon is deployed today, and how hard it is to defend against. The list runs from nuclear missiles to a World War II railway gun.
| Rank | Weapon | Type | Key figure |
|---|---|---|---|
| 1 | Trident II D5 | Submarine-launched ballistic missile | Range over 12,000 km, up to 8 independently targeted warheads (design) |
| 2 | R-36M2 Voevoda and RS-28 Sarmat | Heavy intercontinental ballistic missiles | 10 warheads of 750 kilotons each (R-36M2) |
| 3 | Poseidon | Nuclear-powered, nuclear-armed unmanned torpedo | Claimed test October 2025 |
| 4 | Tsar Bomba (RDS-220) | Hydrogen bomb | 50 megatons, tested October 30, 1961 |
| 5 | B-41 (Mk-41) | Thermonuclear gravity bomb | 25 megatons, about 500 built |
| 6 | Biological weapons | Disease agents used as weapons | Banned by treaty since 1975 |
| 7 | 9M730 Burevestnik | Nuclear-powered cruise missile | Claimed test October 21, 2025 |
| 8 | Oreshnik | Intermediate-range ballistic missile | First combat use November 2024 |
| 9 | Little Boy and Fat Man | Atomic bombs | 15 and 21 kilotons, 1945 |
| 10 | VX | Nerve agent | A few milligrams on skin can be lethal |
| 11 | GBU-57 Massive Ordnance Penetrator | Conventional bunker-buster | About 13,600 kg |
| 12 | Father of All Bombs (FOAB) | Thermobaric bomb | Claimed 44 tons of TNT equivalent |
| 13 | GBU-43/B MOAB | Conventional air-burst bomb | About 11 tons of TNT, weight about 9,800 kg |
| 14 | MQ-9 Reaper | Armed drone | Four Hellfire missiles, top speed about 482 kph |
| 15 | Schwerer Gustav | Railway gun | 80 cm caliber, range about 47 km |
The 15 most dangerous weapons ever made, ranked
1. Trident II D5
The Trident II D5 is carried by US Ohio-class and British Vanguard-class submarines and has been in service since 1990. Launched from a hidden, moving submarine, it cannot be reliably found or stopped before launch, which is why it sits at the top of this list.
It flies at roughly 29,000 kph and can reach targets more than 12,000 kilometers away. Each missile was designed to carry up to eight or more independently targetable warheads, commonly the W88 at 475 kilotons or the smaller W76.
How we valued it: range, warhead count and survivability of a missile that is deployed today, not a prototype.
2. R-36M2 Voevoda and RS-28 Sarmat
The R-36 family began in the Soviet Union and its last model, the R-36M2 Voevoda, can carry ten warheads of about 750 kilotons each with a range of up to 16,000 kilometers. Its large payload lets it release many decoys alongside its warheads.
Its replacement, the RS-28 Sarmat, was test-launched again in May 2026. Russian officials say deployment at Uzhur could start before the end of 2026, while outside analysts say the missile is still in testing after years of delays.
How we valued it: payload, range and the fact that the R-36M2 is operational now, with Sarmat counted as a successor still unproven.
3. Poseidon
Poseidon is a Russian underwater drone designed to cross oceans with a nuclear warhead and detonate near a coast. Russia said it carried out a successful test on October 28, 2025, and announced it a day later.
Outside analysts do not describe it as operational. We rank it high because of what it is designed to do, not because it is ready, and because no defense exists today against a weapon that travels deep underwater.
How we valued it: stated design purpose and the reported 2025 test, discounted because it is not confirmed in service.
4. Tsar Bomba (RDS-220)
The Soviet Union detonated Tsar Bomba over the Novaya Zemlya test range on October 30, 1961. At 50 megatons, it remains the most powerful explosion humans have ever made, more than 1,000 times the combined force of the Hiroshima and Nagasaki bombs.
The original design was for 100 megatons, but the yield was halved to reduce fallout and give the bomber crew time to escape. The weapon was never put into service because it was too heavy and too impractical to deliver.
How we valued it: single-event yield, the highest ever recorded, discounted because it was a one-off test device.
5. B-41 (Mk-41)
The B-41 was the most powerful nuclear weapon the United States ever put into service, with a yield of 25 megatons. It served with Strategic Air Command from 1961 until 1976.
About 500 were built. The last ones were later dismantled, and a bomb casing is on display at the National Museum of the United States Air Force in Ohio.
How we valued it: yield per weapon and the number built, with no weight for current use because the bomb is retired.
6. Biological weapons
A biological weapon needs no launcher and no silo, which is what makes the category so dangerous. Plague is a documented example: Japan’s Unit 731 dropped plague-infected fleas on Chinese cities during World War II. The Black Death of the 1300s killed tens of millions in Europe.
The Biological Weapons Convention banned the development of these weapons in 1975. Our original list ranked a hypothetical engineered virus at number one. We removed it, because ranking a weapon that has never been shown to exist is speculation.
How we valued it: documented historical use and the scale of harm natural outbreaks have caused, since the weapon class has few verified modern figures.
7. 9M730 Burevestnik
Burevestnik is a Russian cruise missile powered by a nuclear reactor, designed to fly for very long distances and manoeuvre around missile defenses. Russia said it carried out a successful test on October 21, 2025.
Independent analysts note earlier failed tests and do not consider it operational. It earns a place for its design goal, which would give a nuclear power an almost unlimited range.
How we valued it: stated capability and reported tests, discounted for the long record of failures.
8. Oreshnik
Oreshnik is a Russian intermediate-range ballistic missile with several warheads. Russia used it in combat for the first time in November 2024, when it struck a Ukrainian industrial site at Dnipro.
It was later reported to have entered combat duty in Belarus in December 2025. The weapon matters because it is a real, used system that can carry either conventional or nuclear warheads.
How we valued it: demonstrated use and delivery speed, with limited weight for a conventional payload.
9. Little Boy and Fat Man
Little Boy, a uranium bomb of about 15 kilotons, was dropped on Hiroshima on August 6, 1945. Fat Man, a plutonium bomb of about 21 kilotons, was dropped on Nagasaki three days later. They remain the only nuclear weapons ever used in war.
Estimates of the death toll by the end of 1945 are around 200,000 across both cities. Both bombs are far weaker than modern warheads, which can be tens of times more powerful.
How we valued it: the only confirmed combat use of nuclear weapons, with the death toll as the measure of harm.
10. VX
VX is a nerve agent developed in the 1950s. It is an oily liquid that can poison through the skin, and a very small amount can be fatal. The Chemical Weapons Convention, in force since 1997, bans its production and stockpiling.
Another nerve agent, sarin, was used in an attack near Damascus in August 2013. VX was used in a 2017 killing at Kuala Lumpur airport, which showed the agent still exists outside official stockpiles.
How we valued it: lethality per dose and confirmed modern use, with no weight for mass-scale delivery.
11. GBU-57 Massive Ordnance Penetrator
The GBU-57 is the heaviest precision-guided bomb in the US arsenal, at about 13,600 kilograms (30,000 pounds). It is designed to burrow deep into hardened underground targets before exploding.
The United States used it for the first time in combat in June 2025, striking Iranian nuclear sites. It replaces the older Grand Slam on our list, a WWII earthquake bomb that did similar work at far smaller scale.
How we valued it: the heaviest conventional bomb in service with confirmed combat use in 2025.
12. Father of All Bombs (FOAB)
Russia tested the Aviation Thermobaric Bomb of Increased Power in 2007 and claimed it was the most powerful non-nuclear bomb ever, at about 44 tons of TNT equivalent. It weighs about 7,100 kilograms.
The figure comes from Russian statements and independent experts have doubted it. A thermobaric bomb spreads fuel in the air and ignites it, producing a long blast wave.
How we valued it: official claims only, discounted heavily because the numbers are unverified.
13. GBU-43/B MOAB
The Massive Ordnance Air Blast, nicknamed the Mother of All Bombs, was first tested in 2003. It weighs about 9,800 kilograms and has a blast equivalent to about 11 tons of TNT.
It was used in combat once, in April 2017, against a tunnel complex in Nangarhar province, Afghanistan. That makes it the most powerful non-nuclear bomb with a confirmed combat use before the 2025 GBU-57 strikes.
How we valued it: verified yield and one confirmed combat use.
14. MQ-9 Reaper
The MQ-9 Reaper first flew in 2001 and entered service in 2007. It is operated remotely by a pilot and a sensor operator on the ground and can carry four AGM-114 Hellfire missiles, or laser-guided and GPS-guided bombs.
It is not the most destructive weapon on this list, but it changed how wars are fought by letting a state strike from thousands of kilometers away. Armed drones of many types have since spread to dozens of countries.
How we valued it: how widely it is used, with low weight for destructive power.
15. Schwerer Gustav
Schwerer Gustav was a German railway gun built by Krupp in the 1930s. Its 80-centimeter shells could reach about 47 kilometers, and a single shell weighed several tons.
It was used against Sevastopol in 1942 and destroyed by German forces at the end of World War II. It is on the list as the largest gun ever to fire in combat, not as a threat today.
How we valued it: caliber and range, with no weight for current danger.
How did we rank the weapons?
Danger is not only about size. We scored each weapon on three things: how much harm one use can cause, whether it exists and works today, and how hard it is to defend against. A hydrogen bomb scores high on the first, a submarine missile scores high on all three, and a railway gun scores on none today.
This is why a deployed Trident missile outranks the Tsar Bomba. The Tsar Bomba is the biggest explosion ever, but nobody can deliver it. We also removed the RPG, phosgene and the Grand Slam from the 2019 list: none still matches the scale of the weapons that replaced them.
What changed in 2026?
New START, the last nuclear arms limit between the United States and Russia, lapsed on February 5, 2026 and nothing has replaced it. The world holds roughly 12,000 nuclear warheads as of January 2026, and about 4,000 of them are deployed with missiles and aircraft.
Russia’s new systems, Poseidon, Burevestnik, Oreshnik and Sarmat, are the main additions this year. The United States used its largest conventional bomb in combat for the first time in June 2025.
FAQ
What is the most dangerous weapon in the world?
In our 2026 ranking it is the Trident II D5 submarine-launched ballistic missile, because it combines high yield, many warheads and near-immunity from a first strike.
What is the most powerful weapon ever detonated?
The Soviet Tsar Bomba, tested on October 30, 1961. Its yield was 50 megatons, more than 1,000 times the combined power of the Hiroshima and Nagasaki bombs.
How many nuclear weapons exist in 2026?
Roughly 12,000 warheads as of January 2026, of which about 9,700 are in military stockpiles and about 4,000 are deployed on missiles and aircraft.
What is the most powerful non-nuclear bomb?
By confirmed combat use, the US GBU-57 Massive Ordnance Penetrator at about 13,600 kg. Russia claims its FOAB has a larger blast, but that figure is unverified.
Is the RS-28 Sarmat missile in service?
Not confirmed. Russia tested it in May 2026 and says deployment could begin before the end of the year, but outside analysts say it is still in testing.
Which weapons did you remove from the old list?
The RPG, phosgene, the Grand Slam bomb and a hypothetical chimera virus. They no longer match the scale of newer systems or could not be verified.
How we put this list together
We ranked weapons by scale of harm, current availability and defensibility, using public technical specifications, treaty records and reported test and combat events. Figures that rest on one government’s claim are marked as claimed and ranked lower.
Last updated: October 2026.
