California skyquake waveform. Notice how sharp it is - no small tremblors leading up to the event. This is a massive sonic boom, not a ...

Editor's note: P.W. Singer is director of the 21st Century Defense Initiative at the Brookings Institution and author of "Wired for...

By DANIEL MICHAELS and MARGARET COK ER A plane loaded with weapons from North Korea that was recently impounded in Bangkok was bound for...

Washington (CNN) -- The U.S. military's Missile Defense Agency will practice protecting the United States from a simulated Iranian missi...