Anti-government protesters march in Guatemala City, Guatemala, Sept. 20, 2017.
What happens when outsiders step in with good intentions? As the crisis in Guatemala shows, it's complicated.
The NATO secretary general, Jens Stoltenberg, reaches out to Donald Trump.
While Donald Trump's disdain for the alliance has apparently abated, the future is still disturbing.
A professor who once held top secret clearance explains how levels of classification work and where handling sensitive information gets tricky.
A woman holds a flag as she looks out over the National Sept. 11 Memorial and Museum.
Data on violent incidents in the US reveal that our focus on Islamist extremism since 9/11 may be misguided.
On his way to the White House, Jan. 20, 2017.
AP Photo/Andrew Harnik
Is Trump correct in asserting that NATO has outlived its utility? Or that NATO’s members enjoy a 'free ride' on the back of the US? A political scientist examines the evidence.
May takes a hard line on Brexit.
The UK prime minister is squaring up to European negotiators in pledging a hard Brexit. But is she overplaying her hand?
Trump’s access to nuclear weapons poses a new and unknown threat to global peace and security.
AAP Image/NEWZULU/ZACH SIMEONE
Donald Trump will soon have command of thousands of nuclear weapons. This presents a new and unknown threat to global security - and an urgent incentive for all states to ban nuclear weapons.
New research shows how we can track and even anticipate terrorists' movements using social media.
General Sir Richard Shirreff when serving as commander of the British forces in Kosovo in 2000.
Phil Noble / PA Archive/Press Association Images
We should welcome the latest intervention from General Sir Richard Shirreff – he knows what he is talking about.
All parties are posturing for influence.
US Vice President Joe Biden’s trip to Asia next week could not come at a more timely moment. It is the first high level visit since President Obama cancelled his trip during the government shutdown in…