In relation to Ireland, the threat level from international terrorism is constantly under review and that remains the case after the Manchester bombing, writes Cormac O’Keeffe.

Garda intelligence services have been dealt a blow with the retirement of its chief with uncertainty as to how long it will take to fill his position.

Senior gardaí are concerned at the potential threat posed by Irish fighters returning from Syria and Iraq as the assault on Islamic State (IS) intensifies.