Although North Korea's recent missile test is unlikely to have been an ICBM, they are likely to have a medium range missile that could hit South Korea in a few years.
Nuclear bunkers are familiar Cold War artefacts, but many have been re-purposed or lie derelict.
Beijing has traditionally retained its nuclear weapons on a no-first-use basis, but it's ready to deploy them more assertively.
It's two and a half minutes to midnight according to the Doomsday Clock. But what is the clock and why should we pay attention?
This year saw nuclear weapons tested, stockpiles renewed, and disasters remembered.
In early December, the nations of the world are poised to take an historic step on nuclear weapons. Yet Australia sticks out like a sore thumb among Asia-Pacific nations in arguing against change.
Donald Trump will soon have command of thousands of nuclear weapons. This presents a new and unknown threat to global security - and an urgent incentive for all states to ban nuclear weapons.
What's the worst that could happen after the US election? As ever, "preppers" are ready for the total collapse of society.
Is the U.S. prepared for nuclear attacks from terrorists or rogue nations? A radiation expert explains how Cold War-style fallout shelters could help protect us from this growing threat.
Laugh at Jeremy Corbyn all you like, but he's right: nuclear deterrence isn't a zero-sum game.
North Korea has been signalling an uptick in its nuclear programme for a while – and its strategy is as clear as ever.
What are the implications of North Korea's claims to have detonated a thermonuclear weapon?
Recently released secret documents reveal the chilling extent of Cold War planning for a nuclear holocaust.
From the air and on the ground: the reporters who told the HIroshima and Nagasaki stories to the American public.
The average age of survivors is now 80. In five years, very few of these first-hand witnesses will be around to remember the event. Many of their stories are in danger of being lost forever.
The way we judge nuclear risk isn't just a rational calculation – it's a reflection of much deeper biases.
Controversy has raged down the years over whether the film was censored by the government. Now secret files reveal the truth after 50 years.