The costs of cooperation with Moscow
The president says he wants to “win.” What does that mean?
A dispatch from Norway's military buildup
A dispatch from Iraq
Lasers-armed drones and interceptor missiles are among America’s possible tech options for impeding a North Korean nuclear strike.
The future arsenal will be networked, presenting unique security challenges for the U.S. Air Force.
In Iraq, elite American fighters—not just local forces—are hunting some of the most feared terrorists in the world.
The Pentagon is rushing to develop new technology to fight the group’s unmanned aerial vehicles in Iraq.
As the Kurds prepare to help take back Mosul from ISIS, their commanders await political negotiations with Iraqi leaders they do not trust for a future they cannot predict.
How the intelligence community learned to spy on itself
A brief guide to the evidence.
Traveling back to my hometown of Orlando, I heard a sustained cry for peace, and little call for war.
It can’t last. The U.S. better get ready.
In Turkey, Syrians’ crushed expectations meet the world’s indifference.
Use a Slinky.
A study finds that motivations vary widely.
If the U.S. is not officially at war, why are its soldiers dying in war zones?
How fear has slammed the door on Syrian migrants
The Iowa senator and Iraq War veteran has become a leading voice for Republicans on national security.
Anticipating cutting-edge scientific research before it happens may be key to protecting against bioterrorism.