Trump announced 'hard-hitting' new sanctions on Iran in response to the attack on a US drone. A peace studies scholar explains why sanctions rarely work.
Political fallout from the Vietnam War gave Congress more power to control foreign affairs, but they have been reluctant to use it.
A recent review found moral injury was experienced by a wide range of people in different professions, including journalists, police, teachers and soldiers.
Leonardo's professional life reveals his genius for creating technologies of destruction.
Science fiction has made us vigilant of 'killer robots' in our midst, but they're far closer than many of us realise.
Human conflict can bring isolation to environments, which helps the local ecology thrive. After the war has ended, the return of nature is a poignant memorial and symbol of peace.
Scientists studying the atmosphere found help in an unlikely place – the aerial bombing campaigns of World War Two.
PTSD is a relatively modern term, but the symptoms are as old as civilisation itself.
Men have come to dominate military combat but new evidence suggests this might be more an accident than an inevitability of evolution.
Those who speak of the inevitability of war in space will fuel a race to the bottom, and see even more energy towards an arms race in space.
The last thing the Middle East needs is another open conflict between two massive military powers. Fortunately, they both seem to agree.
A decades-long policy of ambiguity means that Israel's chemical arsenal remains the subject of speculation.
To understand how a new world war might play out, it's important to remember just how powerful the US really is.
Guns for hire are back in business – and they're making war even more dangerous.
Not all rebel armies use rape and sexual violence as a weapon. Some have actually designed ways to prevent such atrocities. How and what can we learn from them?
Coalition forces are careful about how they report civilian deaths. And we think war is painless, as a result.
Whether as soldiers, suicide bombers or human shields, children are an increasingly common sight on the battlefield.
As Japanese imperialism rose and fell, its leaders interpreted and re-interpreted a single distinctive concept: "bushido".
A round of ominous war games might not be cover for military action, but it could raise tensions to an explosive level.
The humble carrier pigeon played a huge role in World War I and saved many lives. But despite huge technological advances, animals are still suffering and dying in modern wars.