The Good Friday Agreement that ended three decades of armed strife in Northern Ireland has turned 25 years old on a bittersweet anniversary. Violence was quelled in exchange for sacrificing the right to justice of the 3,700 victims of the IRA and radical loyalist, and ensuring impunity for the perpetrators.

Since then, dissident groups on both sides have killed more than 150 people. Peace has not translated into integration, but into a cold coexistence that has a high risk of volatility: London has just raised the anti-terrorist alert in the territory.