The Manchester Arena terror attack might have been prevented if MI5 had not missed a "significant opportunity" to stop suicide bomber Salman Abedi.
Abedi took 22 innocent lives when he detonated his lethal device in the venue’s packed foyer after an Ariana Grande concert in 2017.
Among the victims were teenage sweethearts Chloe Rutherford, 17, and 19-year-old Liam Curry, from South Shields, and Philip Tron, 32, and 19-year-old Courtney Boyle, both from Gateshead.