The weapon, designed to be an apex engine of atomic destruction, already has the unofficial nickname “Satan-II.” But will it ever get off the ground?

The US has produced the first plutonium pit in 35 years for the W87-1 warhead, marking a milestone in restoring nuclear ...

The Department of Energy’s National Nuclear Security Administration (NNSA) has announced the completion of the first ...

* Charts show that since 2017 China has had Mach 25 weapons, whose kinetic energy alone (not explosion) is immense; those can ...

Sensors from Army missile interceptors stationed on Guam were tracking a Chinese-launched intercontinental ballistic missile ...

Russia appears to have suffered a catastrophic failure in a test of its Sarmat missile. The images from Sept. 21 show a ...

The episode highlights the importance of managing upgrades in Chinese war-fighting capabilities. Read more at ...