Some estimates put the heart of Pickaxe Mountain as far as 100 meters (nearly 330 feet) underground—meaning even the most ...

North Korea’s six underground nuclear tests may have done more than produce short-lived tremors. They appear to have reactivated dormant faults beneath the country’s Punggye-ri test site, leaving the ...

Whether or not the U.S. ever drops a nuke on the granite complex, the physics of attacking something buried 100 meters ...

Between 2006 and 2017, North Korea conducted six underground nuclear tests at its vast testing site at Mount Mantap in North Hamgyong province. Typically, underground explosions trigger an intense ...

After eight months of a war that decimated its leadership and impoverished the country, Iran appears more likely now to seek ...

Some Iranian clerics and officials argue the country must rebuild deterrence by dropping its longstanding pledge not to build ...

A nuclear blast in space could cause significant damage. A new simulation shows how many satellites it could disable.