Disruptive technology is fundamentally reshaping global security, and potentially laying the ground for a US-China conflict.
The Outer Space Treaty has guided global exploration and use of outer space since 1967. Trump's 'Space Force' may not be a good fit.
Where to draw the line between loyalty to the nation and the struggle for equal rights? A scholar sees parallels between NFL protests and a call for African-Americans to 'close ranks' during WWI.
South Africa's relations with the US could sour under President Trump.
A strategy to shut down Taliban safe havens in Pakistan could bring the war to an end.
To understand how a new world war might play out, it's important to remember just how powerful the US really is.
President Trump proposes to send the National Guard to protect the southern US border. Instead of searching for your old civics textbook, here's a pocket history of the soldiers in the spotlight.
Here's the research that explains why President Donald Trump's limits on transgender military service may be struck down in court again.
Privatization will aggravate, not solve VA's problems.
Compared to its foreign disaster missions, the US military mobilized slowly after Maria. But in numbers, capacity and logistics coordination, its work in Puerto Rico was on par with other aid efforts.
Here's the research that explains why President Donald Trump's ban on transgender military service was so easily struck down.
The deaths of four American soldiers in Niger last month highlighted the nature and implications of US military presence in Africa.
Civilians have become so far removed from the military and war, it can be hard to understand veterans. Their poetry can help us connect.
If humanitarian need can't move the Trump administration to save Puerto Rico, then perhaps American self-interest will: The island is a crucial part of the country's economic and military machinery.
Ten months of data reveal some alarming trends.
Almost hidden in the orderly rows of men's names on the Vietnam War Memorial are those of eight female nurses who died in the conflict.
Not all who fled Vietnam at the end of the war wanted to be resettled in the US. But those who returned faced an unwelcoming government.
Is there honor in a losing battle? The US military faced this question in Vietnam. Its response would eventually change how the media covered war and how Americans perceive it.
US military bases usually get their electricity from the civilian grid, which is vulnerable to attack and to disaster. Solar-powered microgrids could protect national security, and would save money.
What should America's role in the world be? A lot of people have an answer, but few of them agree.