Extent of Russian cover-up at Semipalatinsk nuclear weapon test site revealed
New Statesman reports advice given by scientists was ignored by Soviet authorities.
North Korea can conduct nuclear detonation within hours of Kim Jong-un's orders, warns South Korea
Seoul has issued the warning amid concerns that the North could conduct a nuclear test in the coming weeks.
US Secetary of State Rex Tillerson calls for cooperation with China in first visit to country
Talks were dominated by concerns over North Korea.
Eye in the sky: Japan launches spy satellite to watch North Korea amid rising nuclear threat
Japan's Radar 5 Information Gathering Satellite (IGS) was flown into space atop the H-IIA rocket.
Inside a top secret underground Cold War nuclear facility in Chongqing, China
The world's largest artificial cave was designed to withstand thousands of tons of explosives and 8-magnitude earthquakes, as well as atomic and hydrogen bombs.
Historic nuclear weapons explosions footage declassified and uploaded to YouTube
Around 10,000 films were created covering 210 nuclear tests conducted by the US, which are now being digitised.
Is the US going to war with North Korea? Secretary of State Rex Tillerson says military strike is 'an option'
Top US diplomat lands in South Korea to deliver a combative message to the hermit kingdom.
Chinese premier warns rising tensions in Korean Peninsula could lead to 'conflict'
Li Keqiang urges all parties concerned to resume talks to deescalate tensions relating to North Korea's nuclear threat.
Trump 'very angry' with North Korea missile launch but says too late to meet Kim Jong-un
He called Pyongyang's threats 'very dangerous' but said China can solve the problem 'very easily if they want to'.
Donald Trump signals desire to increase US nuclear weapons arsenals
The president said he was concerned with America falling behind Russia.
North Korea's missile launch shows it is confident of test-firing ICBM within a year – Report
Pyongyang might launch an ICBM sometime during a probable summit between the US and China, the report said.
The moment Trump learned of North Korean missile launch at Mar-a-Lago golf course
Behind the scenes imagery includes photo of the soldier who carries the US' nuclear codes.
US envoy rejects Duterte's accusation that Washington is building arms depot in Philippines
US would not build anything in the Philippines against the consent of Duterte's government, the envoy said.
Ex-Soviet leader Mikhail Gorbachev warns that countries are preparing for World War 3
'It all looks as if the world is preparing for war,' said the former Russian president.
Think tank says satellite images indicate North Korea has 'restarted plutonium production for nuclear weapons'
The Washington-based monitoring project 38 North say that a plutonium plant is 'very likely operating'.
Global destruction looms as Doomsday Clock moves closer to midnight
Clock predicting end of humanity moved 30 seconds closer to midnight
Watch Doomsday clock announcement live: How close is Earth to catastrophe?
Doomsday Clock expected to move closer to midnight as global threats loom.
North Korea ready to test fire ICBM 'at any time, at any place', warns official
Earlier this month Pyongyang warned its ICBM would 'send the shiver' down the US' spine.
Democrats introduce bill to limit President Trump's ability to use nuclear weapons
It will restrict Trump's ability to fire a nuclear first strike without a declaration of war by Congress.
Christian activists to argue in court nuclear weapons protest was 'integral' to their faith
Members of Put Down the Sword campaign group say demo was not illegal under Human Rights Act.
China develops new 'humpback' nuclear submarines with 'capability of striking US'
The 'Jin' Type 094A carries 12 submarine-launched ballistic missiles known as 'big waves'.
Climate change, Putin and nuclear weapons: Five main takeaways from Rex Tillerson's senate hearing
The Secretary of State nominee clashed with a GOP senator as environmental activists were escorted out.
Barack Obama told to take nuclear weapons off 'hair-trigger alert'
'Trump could launch 140 warheads in the time it takes to write 140 characters.'
South Korea to create special military unit to eliminate Kim Jong-un if he launches nuke attack
Defence chief in Seoul said the move will be part of broader defence measures to thwart increasing nuclear threats.
US tops ranking of global arms dealers as Obama's America boasts record weapons sales
American sales of weapons to Saudi Arabia, Israel and Pakistan dwarf China, Russia and France.
Trump invites world to 'arms race' over nuclear arsenals
United States will 'outmatch' world powers as it build's up its nuclear capability, says president-elect
New arms race? Trump says US 'must greatly strengthen and expand' nuclear capabilities
The president-elect previously said it is important to be 'unpredictable when it comes to nuclear weapons.
Russian ambassador blames UK and Nato for increased global tensions
Ambassador Alexander Yakovenko believes it is up to the West to curb their aggression.
India will not become Japan's 'pawn' to contain Beijing in South China Sea, China's state-run paper says
Chinese paper says India will get closer to Japan but will not enter into a 'brotherhood relationship'.
Canadian diver 'may have found' dummy atomic missile that disappeared in 1950
A commercial diver may have stumbled across the inactive bomb off the coast of Canada.