Buckingham Palace knifeman being questioned by counter-terror police after injuring two officers
Europe is on high alert following a spate of recent terror attacks
UNICEF: Boko Haram has used 83 child suicide bombers in 2017!
The insurgency has displaced 1.7 million people and left an estimated 20,000 people dead since 2009
The Barcelona attack suspect has been killed (Upd)
The driver of the white van is dead