The effects of terrorism in one country spill over across national borders to reduce the trade of other nations. This reduction in trade is long lived and may make it harder to combat terrorism.
It cuts shuts down the chance for dialogue.
One of the London Bridge attackers was linked to the extremist group.
States and territories have agreed to strengthen their laws to ensure a presumption against granting bail or parole when people had 'demonstrated support for, or have links to, terrorist activity'.
There is good evidence that Australia's counter-terrorism strategies are working.
An outline of the ways laws to restrict the activities of terrorist suspects have evolved.
We asked two academics to check the claim made by UKIP leader Paul Nuttall.
Once we switch from focusing on total terror deaths (or attacks) per country to terror deaths per capita, relevant conclusions about what drives terrorism change dramatically.
Theresa May says they have. But let's take a closer look.
Policing culture is often associated with a lack of transparency and a resistance to external examination.
Low-tech threats have been the biggest concern of late, but the Manchester bombing reminds us of a host of security concerns.
The U.S. is considering expanding a ban it imposed in March on several Middle Eastern countries to all flights from Europe. A close look suggests the meager benefits just aren't worth the high costs.
If it were a film, viewers would say it's too far-fetched to be believable.
From the Islamic State to North Caucasian rebels and far-right nationalists, Russia is facing overlapping extremist threats.
Last night's terrorist attack in Manchester reveals the challenges facing European intelligence and security services in preventing people who use everyday things like cars to cause mayhem.
Hyperbolic approaches to threat measurement don’t lead to very effective counter-terrorism policy.
In recent years, anti-terrorism defences have become more subtle. That might be about to change.
The UK has yet to properly grapple with its past complicity in prisoner abuses and torture.
For the first time, parliament plans to ban a right-wing extremist group, called National Action.
These days, we aren't often told when a terrorist plot is foiled, but Brits still set off fireworks to remember the one they do know about.