Pentagon: Reports "credible" mustard gas used in ISIS attack
Islamic extremists likely used the deadly chemical weapon against Kurdish fighters
Pentagon
U.S. and Syrian rebel allies at odds over who is the enemy
More than 600 fighters dropped out of U.S. training program due to differences over who to fight, says source
Russia believed to be behind Pentagon's Joint Staff email breach
The staff's unclassified system was the victim of a "sophisticated" intrusion in late July
Pentagon's early training of Syrian rebels seen as "failure"
Officials say first attempt at training rebels to fight ISIS was full of problems
Pentagon's Joint Staff email was victim of "sophisticated" intrusion
The staff's unclassified system was the target of the hack
Pentagon: U.S. launches 1st Syria airstrike from Turkey
As U.S. starts closer air raids of ISIS fighters, five Pentagon-trained fighters captured by al Qaeda affiliate inside Syria
U.S. officials: 5 Pentagon-trained fighters captured in Syria
Pentagon has lost track of some of the fighters who have apparently scattered; fighters probably captured by al-Nusra
Military readies plans to lift ban on transgender personnel
After the expected announcement, officials will take several months to analyze the policy change
Amid July Fourth threat, GOP pushes for defense funding
Republican Party attacks Democrats for "playing political games" over national security
Is the Syrian civil war hampering anti-ISIS recruitment?
Defense Secretary Ash Carter tells CBS News' Margaret Brennan that finding Syrians who want to fight ISIS - rather than the Syrian regime - is difficult
Pentagon breaks down price tag of war against ISIS
Since bombings began last August, officials say the U.S. has spent $2.7 billion, with war costing millions a day
Ex-Army doctor accused of grotesque training practices
Dr. John Hagmann's medical license and government contracts were suspended after the release of a report documenting alleged abuses
Robots programmed to save the world
The Pentagon's science research group, DARPA, convened 24 teams from around the world to compete for $3.5 million in a robotics competition
Anthrax investigation broadens
Last week the Pentagon said that live anthrax had accidentally been shipped to 17 states and Washington, D.C.
CDC is investigating Pentagon's accidental shipment of live anthrax
The U.S. army says as many as 22 people were exposed to live anthrax
ISIS leader confirmed killed by U.S. forces
The U.S. had been tracking Abu Sayyaf for months
Hackers tried to hit Pentagon with Heartbleed bug
NSA memo reports over 42,000 attempts to hack the Department of Defense last year through the Heartbleed bug, but it could have been worse
ISIS threat prompts U.S. military bases to raise security level
Pentagon spokesman says increased security was ordered in wake of Texas attack and social media chatter
Critical U.S. satellites vulnerable?
U.S. and China locked in a high stakes contest over satellites that are critical to national security and everyday life
Pentagon: Cyberwarfare a viable option in conflicts with enemies
Officials say Pentagon wants more transparency in its cyber mission - and it could provide some deterrence to adversaries
Pentagon chief: Europe "not doing enough" on defense
Defense Secretary Ash Carter offers unusually blunt assessment of the Europeans' defense efforts
Special ops soldiers fear females in ranks, surveys find
As the Pentagon moves to integrate women throughout the armed forces, elite soldiers have been unusually vocal about their concerns
Pentagon chief may ease enlistment standards
Defense Dept. considers easing standards for certain military jobs, including tech-oriented ones, to attract, retain service members and civilians
Bowe Bergdahl charged with desertion
Army Sgt. controversially traded for 5 Taliban also charged with "misbehavior before the enemy," Pentagon says; potential penalty debated
Defense secretary faces pushback on lifting transgender ban
Top military leaders voiced reservations to Secretary Ash Carter after he signaled he's open to lifting the ban on transgender servicemembers
Trump revokes Kamala Harris' Secret Service protection
Congress passed a law in 2008 that limits Secret Service protection for former vice presidents to up to six months after leaving office.
Families of 2 children killed in Minneapolis school shooting speak out
The family of one of the victims shot early Wednesday morning at Annunciation Catholic Church in southwest Minneapolis spoke out for the first time Thursday afternoon.
A look at the meteorology behind Hurricane Katrina 20 years later
Katrina, one of the deadliest hurricanes on record to hit the United States, first formed as a tropical wave off the coast of Africa.
Top CDC officials resign after Monarez ouster, cite concerns over scientific independence
Dr. Debra Houry, the CDC's Chief Science and Medical Officer, and Dr. Demetre Daskalakis, who led the National Center for Immunization and Respiratory Diseases, stepped down hours after the firing of CDC Director Susan Monarez.
Idaho murder victim's mom reacts to "heartbreaking" crime scene photos
Even if crime scene images are somehow redacted, it's still traumatizing for the families, Ethan Chapin's mother wrote in a court document.
Conservatives, economists wary of U.S. stakes in Intel or any other companies
Critics caution U.S. government equity stakes in American companies could lead to cronyism, distorted economics and bad deals for taxpayers.
Trump preparing major ICE operations in Chicago next week, DHS sources say
The Trump administration is preparing to launch major immigration enforcement operations in Chicago next week employing tactics that sparked protests in Los Angeles, sources tell CBS News.
Senator blasts Border Patrol arrest of 2 firefighters battling wildfire
Two firefighters battling a wildfire in Washington State were arrested by U.S. Border Patrol agents, prompting Democratic Sen. Patty to call U.S. immigration policy "sick."
U.S. tariffs exemption for low-value imports ends
An exemption that allowed low-value parcels shipped to the U.S. to avoid tariffs has ended, Trump administration officials say.