Full coverage
Northern Ireland-related Terrorism threat level raised
By Chris Heaton-Harris
MI5 raises terror threat in Northern Ireland to 'severe' - meaning attack highly likely
By Faye Brown
Britain raises domestic threat level for Northern Ireland to 'severe'
By Sachin Ravikumar
Northern Ireland terrorism threat level rises
By Niall Glynn and Julian O'Neill
UK raises terror threat level in Northern Ireland days before possible Biden visit
By Luke McGee and Kevin Liptak