The process of radicalisation is a complex system that cannot be reduced to the brain, behaviour, or environment. It exists at the intersection of all these elements.
The bombings have been framed as part of ongoing internal conflict, but Sri Lanka was just the stage for a play that could have been performed anywhere in the world.
Links between groups within the Kivu province and the Islamic state are not new.
Some Islamic nations, including Brunei, have harsh punishments under Sharia. In pre-modern times, Sharia was rarely used as criminal law, and standard of proof for any prosecution was very high.
The deadly Sri Lanka attacks show a return to the coordinated, sophisticated strikes employed by al-Qaeda in the 2000s, focusing on soft targets with vulnerable institutions.
Its defeat in Syria may now give way to new dangers.
The absence of a strong government in Mali
allows jihadists to enter new areas and flourish.
Hundreds of thousands of women helped the Nazi cause. Few ever faced justice.
Like today's Western women who joined ISIS and now want to return home, American women with British sympathies during the Revolution left the country – but many tried to bring their families back.
Many of the men and women who left homes in the West to join ISIS or similar terrorist organizations in Syria and Iraq as fighters or supporters now want to come home. Should they be allowed back?
With more cases of women such as Shamima Begum expected, the UK is under legal obligations to protect the rights of any children involved.
Terrorist attacks and fatalities peaked in 2014, and have been on the decline since then.
Women used to be largely ignored by counter-radicalisation strategies. Why that changed.
Iraq beat the Islamic State. Now, its Shia government is jailing and even executing all suspected terrorists – most of them Sunni Muslims. The clampdown may inflame a centuries-old sectarian divide.
A schoolgirl who left Bethnal Green to join Islamic State in Syria is now in a refugee camp and wants to return to the UK.
There is a surprising amount of support for the destruction of antiquities in the Middle East.
Not all terrorist incidents have mental illness as a causal factor, and most violent acts are committed by people without a mental illness.
With the 2018 Nobel Peace Prize awarded to two leaders who fight against sexual violence as a tool of war, we looked into our archive to find stories about those efforts across the globe.
Sensationalist media coverage serves the Islamic State's objective by pitting Muslims and non-Muslims against one another.
The extremist network al-Muhajiroun has rebuilt itself before, but that doesn't mean it's destined to again.