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In a carefully worded speech on cyber-security described as a study in 'strategic ambiguity,' Secretary of Defense Chuck Hagel also called for the development of offensive cyber-capabilities and investment in the Pentagon's Cyber Command.

Brig. Gen. Jeffrey Sinclair received no jail time or demotion in rank despite having a long-standing affair with a captain under his command and inappropriate relationships with three junior soldiers.

The reservist who killed 12 people at the Washington Navy yard had behaved 'in a way that raised concerns about his mental stability,' but the 'information was not reported ... as required,' the Pentagon review finds.

Advocacy groups say the plea deal, in which sexual assault charges were dropped against Brig. Gen. Jeffrey Sinclair, shows why military commanders should not have authority over such cases. 

The military sexual assault bill largely prohibits the 'good soldier' defense. It passed just days after a more robust version failed to receive sufficient support amid opposition from the Pentagon.

This week saw Brig. Gen. Jeffrey Sinclair on trial for sexual assault, and news of another case broke: A top Army prosecutor has been suspended after being accused of groping a military lawyer.

The crisis in Ukraine has elicited tough talk from Capitol Hill, but in the back halls of the Pentagon, some officials are focused on a key supply line to Afghanistan that runs through Russia. 

Advocacy organizations are alternately hailing the Army's removals as an important step in ongoing efforts to bring down sexual assault rates, and unleashing a new string of critiques against the Pentagon.

Demand for mental-health treatment stemming from sexual assaults is outstripping the Veterans Administration's ability to provide it. Military veterans testified Wednesday of their frustrations.

Seeing President Karzai as unlikely to sign the Bilateral Security Agreement, President Obama has directed the Pentagon to prepare for a full withdrawal of US forces from Afghanistan.

Bringing US ground forces to their lowest level since before World War II makes sense given that troop-intensive, nation-building operations are unlikely for the foreseeable future, the Defense secretary said Monday in discussing his Pentagon budget plan.

To combat sexual assaults, military officials shift tactics to focus on ferreting out serial predators. Here's why they're increasingly convinced that relatively few people in the ranks commit the bulk of such crimes.

Modern warfare requires increasing amounts of the electromagnetic spectrum for battlefield communications. The Defense Department is arguing for more, putting it in possible conflict with commercial interests.

When cheating within the nuclear forces surfaced, the Pentagon framed it as an ethical issue. But critics say it's the system and cold-war cultural expectations that need a fix.

A 'peer-to-peer' recruiting program that rewarded referrals of new recruits brought in 150,000 soldiers to help fight the wars in Iraq and Afghanistan. A Senate panel held hearings into what went wrong.

The backlog of veterans disability claims was reduced 37 percent after peaking last March, but hit a plateau after the VA stopped its mandatory overtime policy. The path forward is unclear.

Deborah Lee James, the new secretary of the Air Force, vows senior persistent oversight of the scandal-stricken nuclear forces and an attempt to boost missileers' self-esteem.

Security concerns for the Olympics in Sochi are on the rise among US officials, as video threats surface and the Russians hunt for suspected 'black widow' suicide bombers. US military is forced into 'contingency planning.'

In the sharpest warnings they have ever issued on the topic, Pentagon officials told Congress the growing opium trade is threatening the costly US war effort to build a stable Afghanistan.