Defense

Experts warn that new technology makes it easier to covertly produce WMDs

Missiles designed to destroy incoming nuclear warheads fail frequently in tests and could increase global risk of mass destruction

As treaties end, Russia focuses on hypersonic weapons that could “tighten the noose” on current U.S. defenses

Weapons that kill enemies on their own threaten civilians and soldiers alike

YouTube, Facebook and other sites are working together to find and delete extremist propaganda and recruiting videos, but a new study says they can do better

U.S. Secretary of State Michael Pompeo arrives Friday for negotiations, but the photos suggest North Korea leader Kim Jong-un’s regime is increasing its missile-making capabilities

Google, Facebook, Twitter and Microsoft formed the Global Internet Forum to Counter Terrorism last year to prevent terrorists from exploiting their services

Rising seas will ruin Kwajalein Atoll site where 1,300 work and live

Leaving the decision to strike to the president alone is dangerous

Online video serves the Islamic State and other terrorist organizations as a powerful tool for recruiting new members and inciting violence. A potential fix remains curiously in limbo

For the sake of the planet, the U.S. nuclear arsenal should not be on high alert

Nations must agree on penalties with sharp teeth to discourage state-sponsored cyber attacks