The sustained assault on IS's two main strongholds could be followed by years of local and global insurgency.
There is good evidence that Australia's counter-terrorism strategies are working.
The world's response to two terrorist incidents in Iran was telling, and ominous.
Politicians want social media giants to crack down on those publishing extremist material. A focus on disruption, encryption, recruitment and creating counter-narratives is recommended.
An expert explains that such claims are probably more calculated and careful than you'd expect.
The way we talk about attacks is actually helping the extremists' monstrous cause.
Islamic State has destroyed globally-significant sites in Iraq and Syria, but not as wanton acts of destruction. Instead, they are calculated political and religious attacks.
We asked an expert on diplomacy and foreign policy.
When it comes to Islamist extremism and terrorism, change is a constant.
Of all the places for a jihadist militant group to operate, it would be hard to find a more conducive country than Libya.
To the terrorist, children have become but a means to an end. Weapon and target.
A professor at Georgetown University answers three common questions about terrorism and political violence.
Anti-terrorism policy is too often adopted based on very small sets of data – and fear.
A professor who once held top secret clearance explains how levels of classification work and where handling sensitive information gets tricky.
A case study from the height of the Crusades in the 12th and 13th centuries illustrates that even the most brutal leaders can choose to compromise for stability.
The killing of a policeman in a terror attack has heightened tensions as France chooses its next president.
Among the Christians of the Middle East, the largest number – some eight million or so – is of Egypt’s Copts. Here's their story.
To understand the complexities of the conflict in Syria and what might happen next, it helps to untangle the three layers of strife in the war-torn country.
Terrorism laws contain extra hurdles to secure a conviction, so prosecutors and police may prefer to charge offenders with murder or assault in some cases.
Recent attacks on Coptic churches represent a step-up from the sectarian violence of the past few decades.