On February 5, a treaty capping the numbers of deployed Russian and US nuclear warheads will expire, marking the first time in more than half a century that the two countries' nuclear programs will be unconstrained by numerical limits.

The 2010 New Strategic Arms Reduction Treaty (New START) is scheduled to expire on Feb. 6. It is the eighth agreement between the two countries since the 1963 treaty prohibiting nuclear tests in the atmosphere, outer space, and underwater.

Warning comes amid concerns that the UK and its allies do not have sufficient manpower for a coalition of the willing force in Ukraine to be successful

Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the Earth, sea, air, and even in orbit. The physics of shock waves, sound, and radioactive decay means that a nuclear blast is not just a local catastrophe but a global signal that races around the planet.

The last agreement between Washington and Moscow runs out within weeks and a new one could look very different

After meeting with Israel's Netanyahu, Trump said he'd heard Iran is trying to rebuild its nuclear program, "and if they are, we're going to have to knock them down."

Beijing releases 30-page report that includes a call for international community to ‘take concrete and strong measures’ against Japan’s nuclear ambitions.

And, well, they were slow and easily shot down, by air or by ground forces.

The Nuclear Age will appeal to a broad audience, both newcomers to the topic and those who are conversant but not academic specialists.

The US’ strike on Venezuela, and the capture of President Nicolás Maduro and his wife, have prompted conversations around nuclear power in the country.