Defense

The continuing proliferation of atomic weapons threatens the safety of billions

There are defensive, offensive and diplomatic options for averting conflicts in orbit

In an era of pandemics and climate change, we need to reconsider what “national security” means

The U.S. should require a second assent for a strike and pledge to never strike first

Nations racing to acquire weapons that choose their own targets are ignoring the apocalyptic scenarios that can unfold when rivals catch up 

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