The most natural questions to ask about the Manchester terrorist attack are also the most intractable: Who was the perpetrator, and what caused him to carry it out? His name, revealed on Tuesday, is known to us: Salman Ramadan Abedi. He was a British-born 22-year-old of Libyan descent from Manchester, and he was on the radar of the British security services. He attended Salford University but dropped out in the second year of a business and management degree. More details are certain to emerge over the coming days and weeks.
Dr Simon Cottee is a Senior Lecturer in Criminology at the University of Kent and a Contributing Writer to The Atlantic.