Despite efforts to prevent militant groups from getting weapons, they often get their hands on U.S. equipment and use it to attack American troops.
A second plot was planned on 9/11, but there were too few terrorists to carry it off. Twenty years later, al-Qaida and its offshoot the Islamic State group still have trouble attracting recruits.
The over-militarisation of the crisis across the Sahel region has done little to foster stability.
President Trump has claimed the Islamic State was completely defeated on his watch – but an analysis of government maps and other reports shows his administration did only half the work.
The Islamic State is asking its followers to worsen the global pandemic, and its fighters are celebrating the toll disease and racism are taking on US society.
When people are hungry or not sure where their next meal is coming from, they get angry at their governments. This gives terrorist groups opportunities to recruit new members.
Criminal gangs, insurgents and terrorist groups seek to protect the people in the areas they govern, when a central government’s power is weak or nonexistent.
After a foreign policy win, presidents usually enjoy a short-term poll boost. But that’s often followed by a long-term decline.
Hundreds of thousands of women helped the Nazi cause. Few ever faced justice.
Women used to be largely ignored by counter-radicalisation strategies. Why that changed.
An unprecedented onslaught from the US hasn’t destroyed the terrorist organization. What is the secret of its resilience?
The recent parliamentary election in Iraqi may have been the most transformative of the post-Saddam era, a pollster from Baghdad and an American academic explain.
Ten months of data reveal some alarming trends.
The US is doing so with increasing frequency around the world – most recently with Kurdish fighters in Syria. A scholar explains what can go wrong, and why this approach is likely to continue.