"Now to all politicians, we never had anything like this when the Northern Ireland troubles were at their height, we managed, even when the Prime Minister was bombed.
The secret services and special forces can deal with threats without taking away freedoms, you take those away and the terrorists have won. Just let MI5 MI6 SAS ect do their job."
IIRC, the IRA weren't interested in wholesale slaughter or wasn't ready to accept The End of The World as a contingency. Although the risks are still low, the consequences are growing, meaning the One That Got Away can soon be The One That Ruined Everything. Are you willing to live in a world where not just your life, but your entire civilisation can collapse without notice?