How a U.S. hydrogen bomb accidentally turned a Pacific island into jello
A number of islands had to be evacuated after a 1954 U.S. nuclear weapons test.
Russia fires mock nuclear warhead at Ukraine—Kyiv
Russia pummelled Ukraine on Thursday with a wave of missile strikes on cities including Kyiv, Dnipro, and the Odesa and Kharkiv oblasts.
Powerful bombs and solar snake appear on surface of sun
Both events show the star releasing huge amounts of energy.
Nuclear fusion experiment just made something very strange happen
Researchers at the National Ignition Facility were measuring the kinetic energy of ions during their experiment when they saw something unexpected.
What are Putin's nuclear "Doomsday" Poseidon torpedoes?
U.S. officials suspect the Russian navy has attempted to test its Poseidon nuclear-powered torpedo.
Would Putin's nuclear bunker in Ural mountains save him from Armageddon?
Putin's bunker is thought to be deep beneath Mount Yamantau, around 230 miles from the site of the third worst nuclear disaster in history
Russia warns of "radiation disaster" as it ramps up nuclear war talk
Fears about the use of atomic weapons by Russian President Vladimir Putin continue to grow.
U.S. working on "neutralizing" Russia's nuclear weapons—defense officials
An article in the publication "Military Thought" said NATO and the U.S. are looking at "preemptive forceful actions" against Russia.
Ukraine prepares for nuclear strike by Russia
Drills were held "to eliminate the consequences of a nuclear strike," a Ukrainian official said.
Russian state TV guest calls for nuclear strike on U.K.: "Raise the stakes"
Tigran Keosayan told NTV that if there was British involvement in leaks of the Nord Stream pipelines, Russians would want a "retaliatory response."
How can we predict a nuclear war?
"Whatever numerical risk we might try to assign to general nuclear war, it's too high to be acceptable," nuclear politics researcher Tom Vaughan told Newsweek.
Threat of nuclear strike from Russia "high as it has ever been"—Ukraine MP
"Putin has committed a number of absolutely illogical, senseless bloody acts toward Ukraine already," Ukrainian MP Halyna Yanchenko told Newsweek.
Russia seen building mysterious structure by nuclear power plant in Ukraine
The unknown structure is being built at one of the seven nuclear installations at the Zaporizhzhia Nuclear Power Plant, Ukrainian officials said.
Kyiv has 425 "special shelters" ready in case of Russian nuclear attack
The head of Kyiv's regional military administration said in an interview published Tuesday that the shelters are placed through the region in northern Ukraine.
U.S. willing to use military to stop Iran from getting nuclear weapon
Special Envoy to Iran Robert Malley said that a military option will not be ruled out as a last resort as the Biden administration pursues diplomatic options.
Putin has two-pronged plan for winter fight in Ukraine: ISW
The Institute for the Study of War (ISW) made the forecast in its daily update on the conflict on Monday.
Will Putin drop a nuclear bomb on Ukraine? Here's what Americans think
Most Americans think Moscow using a nuclear weapon against Ukraine is either "realistic" or "very realistic."
What are B61-12 gravity bombs—Russia says U.S. 'lowering nuclear threshold'
The upgraded bombs will be delivered to NATO allies' bases in Europe in December, months before what was originally planned.
Inside Biden "Doomsday Plane," which he will fly on if nuclear war happens
If the U.S. is hit by a nuclear strike, the president could order a retaliation from his Doomsday Plane.
Putin should be overthrown, majority of Americans say: poll
Most Americans think overthrowing Putin is a "reasonable objective," according to a Newsweek poll.
What Putin's "dirty bomb" accusations reveals about his war strategy
While experts disagree as to whether Putin's claims are indicative of plans to detonate a dirty bomb himself, they agree it's part of his broader war strategy.
Retreating Russians might blow up nuclear power plant, Ukraine warns
According to Kyiv, Russia could sabotage the Zaporizhzhia Nuclear Power Plant and risk a nuclear disaster.
Russians are building bomb shelters amid fears about nuclear war
Russian construction companies say they are receiving more calls from citizens who are asking for bunkers to be built in their homes.
Fact Check: Russia's claim that photo shows 'dirty bomb' in Ukraine
A graphic shared by Russia's Ministry of Defence alleges the development of a Ukrainian "dirty bomb," aiding a baseless narrative being pushed by the Kremlin.
Finland may allow NATO to place nuclear weapons on border With Russia
Nuclear weapons could be stationed in Finland if the country joins NATO, according to a Finnish newspaper.
Five signs that Russia is preparing for all-out war
Vladimir Putin has recently raised the stakes in the war in Ukraine that began after he launched a full-scale invasion on February 24.
Russia expected to conduct nuclear force exercises amid NATO drill
"Grom"—which means "thunder"—could potentially include test launches of nuclear missiles.
Ukraine general warns world about Putin nuclear threat: "Should be worried"
"I do believe that such a threat really exists and we have to take it into account," Ukrainian General Oleksandr Syrskiy said.
Worst places to survive a nuclear war in the U.S.
"There's no safe place, even relatively safe place," one expert told Newsweek.
Is the U.S. safe from nuclear attack?
With tensions surging over Ukraine and Taiwan, Newsweek explains how safe America is from nuclear attack.