War on Isis: Threat of nuclear terror attack 'highest since the Cold War' says think tank
The International Luxembourg forum says Isis militants seek to carry out a nuclear attack in Europe.
Radiation levels on Bikini Island higher than expected 60 years after US nuclear tests
Latest scientific results, 60 years after US nuclear tests in the Marshall Islands.
Expectations high as Obama to become the first incumbent US president to visit Hiroshima
Obama is also set to deliver a message on the need to prevent the spread of nuclear weapons.
Vladimir Putin encouraged to launch nuclear strike on islands off the coast of Scotland
A Russian politician is demanding Putin drop a nuclear bomb off the Scottish coast in a display of Russian might.
China 'to deploy nuclear submarines in Pacific' amid US tensions
Move reportedly in response to Washington's plans to place anti-ballistic missile system in South Korea.
Obama visit to Hiroshima not to be considered an apology says White House
The US president is expected to speak about elimination of nuclear weapons during visit to the atom bomb site.
North Korea holds mass rally to celebrate end of Workers' Party Congress
Hundreds of thousands celebrated the end of the first Workers' Party Congress to be held here in 36 years.
US threatens to look at 'other options' if North Korea presses on with nuclear and missile tests
Washington declines to say what are the 'other options' as Pyongyang reportedly prepares for fifth nuclear test.
North Korea 'prepares' for new missile launch and nuclear test as Obama issues warning
Obama says the US could destroy North Korea but the humanitarian costs would be too high.
UK terror threat: Nato and EU say 'justified concerns' Isis planning chemical and nuclear attacks
The news comes as German spy agency BND warns beach resorts across Europe could become targets.
Could the US's new hypersonic missile spark World War 3?
Experts say the missiles, which fly at 5 times the speed of sound, could provoke a new nuclear arms race.
Obama hits back at Trump for suggesting Japan acquire nuclear weapons to deal with North Korea
US President Barack Obama said the one who made the comments is ignorant about foreign policy or nuclear policy.
Nuclear Security Summit: Barack Obama says expanded treaty will help foil Isis 'madmen' despite Putin snub
The US President said 102 nations have expanded the Convention on the Physical Protection of Nuclear Material.
Nuclear terror attacks should not be ruled out, warns atomic energy agency head
World has seen a 'big achievement' in barring nuclear terrorism but threat remains, says IAEA director general.
Rattled Japan blasts Trump's call to arm itself with nuclear weapons to replace US military presence.
It is impossible for Japan to arm itself with nuclear weapons says foreign minister.
UK and US to simulate cyberattack on nuclear facility to test resilience
Government sources claim exercise part of prudent planning rather than prompted by imminent threat.
Hiroshima atomic bomb survivor wants Barack Obama to tour city during Japan visit in May
If Barack Obama visits Hiroshima and Nagasaki, he will become the first sitting US president to do so.
North Korea's secret underground nuclear explosions sniffed out by radioactive gas
A device that finds the 'smoking gun' of nuclear tests has been developed.
Pakistan rules out selling nuclear technology to Saudi Arabia
Islamabad clarifies that its nuclear weapons are for domestic purposes and for deterrence.
20 workers at Faslane nuclear base exposed to radiation after safety breach on Trident submarine
Workers exposed to ionising radiation while repairing leaking tank onTrident nuclear weapons submarine.
UN approves tighter sanctions for North Korea that 'increase regime's isolation'
The decision comes two months after the country claimed it carried out a successful hydrogen bomb test.
Stop Trident London rally: Nuclear weapons submarines detectable by super-fast 'underwater drones'
CND's general secretary Kate Hudson believes the UK could opt to move away from nuclear weapons possession.
Stop Trident rally: People have died from cuts, but we can afford £183bn on nuclear weapons?
By the government's own evaluation, Trident does nothing to meet our current security threats.
Labour Trident row: 10,000 sign up for CND rally where Corbyn and Sturgeon will speak
Labour leader's attendance at the 27 February London demonstration has enraged his own MPs.
Labour Trident row: Tom Watson urges David Cameron to hold vote on nuclear deterrent
Labour's internal row over the future of the UK's nuclear deterrent system has reignited.
North Korea calls South Korea's President Park Geun-hye a 'tailless crazy old bitch'
South Korea urged North Korea to stop its 'vulgar' personal attacks on the president.
Iraq hunts 'highly dangerous' stolen radioactive material amid 'dirty bomb' fears
Officials are alarmed at the prospect of a dirty bomb if Isis gets its hands on the material.
North Korea has 'restarted plutonium reactor' which could be used for nuclear weapons
Enriching uranium at the Yongbyon facility could be a precursor to developing nuclear weapons, US says.
Corbyn needs to toughen up on national security or Labour will never win an election
Britons are patriotic and see defence as a top priority for the protection of our country.
Scientists agree World 'Doomsday Clock' should remain at 3 minutes to midnight
The Bulletin of the Atomic Scientists has been monitoring how close we are to destroying ourselves since 1947