The president has asked allies to increase military spending to 2 percent of GDP, but that's not a realistic target in today's economy.
After Steve Sotloff was beheaded by ISIS militants on Tuesday, Congress appears to be warming to U.S. military action in Syria.
The U.S. strike in Somalia with drones and airplanes is part of a bigger picture, as American forces battle Islamic extremism in Africa.
As the crisis in Ukraine worsens, NATO is waiting until next week to decide whether to take any action in the face of an aggressive Russia.
After more than 20 years as an independent country, Ukraine looks to join NATO. Other ex-Soviet nations already have.
Russia may have broken the 20-year-old Budapest Memorandum, which protects Ukraine's integrity, and NATO could decide to react.
A video which has been described as patronizing and sexist threatens to derail the pro-UK campaign.
Two aircraft types - a Cold War veteran and a drone - have been charged with hunting down ISIS in Syria after President Obama authorized surveillance flights.
The end of a decade of war brings a large drop in workers at America's biggest defense companies. But the cuts may be over soon.
Suspicion that James Foley's killer is British raises questions about the many Europeans who have joined ISIS to fight in Syria and Iraq.
Negotiating with ISIS might have saved James Foley. But the U.S., unlike European nations, doesn't do that -- nor does it pay ransoms.
The last email that ISIS sent before Foley's execution can be read as both a recruitment letter and a warning.
The Government Accountability Office says the Pentagon acted illegally by not informing Congress of the prisoner swap with the Taliban.
The F-35 is ruling the fighter market, reinforcing a trend that's pushing Lockheed Martin rivals abroad, where buyers are often unstable nations.
As unrest in Ferguson enters a second week, federal options may come into play.
After weeks of ISIS gains, U.S., Iraqi and Kurdish forces are attempting to take back Mosul Dam from the Islamic State.
A week after Christy Mack was assaulted, her ex-boyfriend was caught in California hotel.
Texas Gov. Rick Perry was indicted on two felony counts Friday by a state grand jury after a lengthy investigation.
With the college football season just around the corner, Notre Dame may be without some of its best players again.
After taking Iraq's second-biggest city, the Islamic militant group added sophisticated U.S. hardware to its weapons collection.
Barack Obama doesn't want to commit to a ground attack in Iraq again. But relying only on airstrikes, experts say, won't beat ISIS.
Air strikes alone may not get rid of ISIS's threat, and ground forces isn't an option. The U.S. faces a tricky problem, but it could follow past models.
Three years after U.S. operations ended in Iraq, U.S. Navy F/A-18 jets are back over the country, to bomb targets in Kurdistan.
U.S. Army Gen. Harold Greene's body returns to the U.S. on Wednesday, along with the bodies of more than 2,000 soldiers who died in combat.
After the death of a top U.S. military official in Afghanistan, experts express concerns about security in the country.
France is trying to balance its domestic economic needs with the recent sanctions against Russia.
Israel has access to a stockpile of American-supplied ammunition, and it has drawn from it during its conflict with Hamas in Gaza.
About 100 bodies are still missing from the MH17 crash site, but contamination and lack of time threaten the investigation.
With 462 people dead in three plane crashes, travelers are wondering if it's truly safe to fly.
After the death of two young Americans in Gaza, questions are raised about how U.S. citizens can legally fight for other nations.
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