Police on the scene in Manchester.
PA/Peter Byrne
Low-tech threats have been the biggest concern of late, but the Manchester bombing reminds us of a host of security concerns.
An illustrated look inside.
Srdjan Zivulovic/Reuters
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.
The UN building … but what’s really going on inside?
Shutterstock
If it were a film, viewers would say it’s too far-fetched to be believable.
EPA/Anatoly Maltsev
From the Islamic State to North Caucasian rebels and far-right nationalists, Russia is facing overlapping extremist threats.
ISIS has claimed responsibility for the May 22 attack at a concert by pop singer Ariana Grande in Manchester, England, killed many teenagers.
Stefan Wermuth/Reuters
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.
Police conduct a search near the Houses of Parliament, a day after the attack on Westminster.
Dominic Lipinski/PA Wire
Hyperbolic approaches to threat measurement don’t lead to very effective counter-terrorism policy.
Armed police outside Westminster as the attack unfolded on March 22.
Stefan Rousseau/PA Wire
In recent years, anti-terrorism defences have become more subtle. That might be about to change.
Keeping it clean.
EPA/Dennis Brack
The UK has yet to properly grapple with its past complicity in prisoner abuses and torture.
Natasa Adzic/shutterstock.com
For the first time, parliament plans to ban a right-wing extremist group, called National Action.
Paul Matthew Photography
The government is set to increase its use of punitive security measures against individuals it can’t bring to court.
Guy Fawkes gets an outing in Lewes, Sussex.
PA/Gareth Fuller
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.
Pat Hutchens/TC
When parliament returns later this month, Labor's Anne Aly will become the first Muslim woman to take a seat in the lower house.
A counter-terrorism strategy will not stop honour-based crimes.
Mansoreh/www.shutterstock.com
Treating ‘illegal cultural practices’ as a form of terrorism could lead to more marginalisation.
Theresa May: will she pick up on counter-extremism where she left off?
Ben Stansall / PA Archive
After years of promises, the government still has not detailed how a bill to tackle extremism would work.
The morning after.
EPA/Olivier Anrigo
France has been in a state of emergency since November 2015, and yet a man was still able to plough a truck through a huge Bastille Day crowd.
Schematic diagram of an aggregate made up of linked users, with the mathematical equation that describes this online pro-ISIS ecology.
Neil Johnson
A new mathematical model of ISIS supporters’ online behavior provides insights into how cyberactivity relates to real-world attacks.
The US embassy in South Africa has warned of terror threats to the country’s upmarket malls.
Reuters/Mike Hutchings
Governments need to build trust, especially during a time of heightened tensions around the threat of international terror attacks.
Her Majesty drops the mic.
PA/Stefan Rousseau
The government has had to make many u-turns of late and that’s unlikely to change now.
A policeman stands guard outside the appartment where Paris attack suspect Salah Abdeslam was found.
Stephanie Lecocq/EPA
Terrorist attacks that are locally sourced and financed are very hard to detect.
Shattered windows at Brussels international airport.
EPA/Laurent Dubrule
Scholars specializing in extremism are beginning to unravel how people – including a higher number of Americans than one might expect – become radicalized to embrace political violence.