Prime Minister Theresa May has raised the terror threat in the UK to its highest level for the first time in a decade and activated Operation Temperer – allowing military personnel on the streets to free up police resources – for the very first time. The announcement follows a blast outside a concert in Manchester which left 22 people dead. After 22-year-old Salman Abedi was identified as the suspected suicide bomber, the threat level was eventually raised to critical and the Operation Temperer was established.
Critical threat level: What does it mean, and what is Operation Temperer? | The Independent