A shooting rampage by an Islamic State supporter in Vienna that killed four people is the latest in a spate of such atrocities in Europe. A recap of the deadliest attacks since 2015.
European countries have threatened sanctions on Russia over the alleged nerve agent attack on Alexei Navalny, but a concerted decision will be tough to reach given the interests at stake
The terrorist threat against Europe has mutated in the last half-decade as jihadist groups have seen their Middle East sanctuaries eroded, but analysts say the West must remain braced for more attacks
Facial recognition has helped simplify our lives but the global anti-racism protests have prompted some privacy and rights groups to voice concerns over the technology is being used police forces
Washington and Brussels have both proposed solutions to facilitate cross-border access to data for law enforcement officials, but the issue has stirred up a hornet's nest.
French President Emmanuel Macron has called for reform of the Schengen system, which currently involves 26 countries: 22 EU countries, plus non-EU Norway, Switzerland, Iceland and Liechtenstein.
The imminent fall of the Islamic State's caliphate in Iraq and Syria has left many countries grappling with what to do with jihadists who want to return.