They have accordingly concluded a cooperation agreement - due to enter into force in 1999 - with the Member States that have signed the Schengen Agreement.
Tá dá réir sin comh aontú comhoibrithe tugtha i gerích acu — le dui i bhfeidhm i 1999 — eis na Ballstáit a bhfuil Comhaontú Schengen sínithe acu.