The international agreement reached in Croke Park last night to ban cluster munitions will be formally adopted in Dublin tomorrow.
It follows years of campaigning against the weapons.
Over 100 countries have undertaken not to use or manufacture cluster bombs, and to destroy stockpiles within eight years.
Contaminated areas are to be cleared and there will be significant measures to assist victims.
However, in some circumstances, armies from states supporting the treaty may have to serve in international operations with armies of countries who do not support the deal.
The US, Russia and China did not attend the conference in Dublin over the past 11 days. Campaigners hope the deal will inhibit these countries from using cluster munitions.
Minister for Foreign Affairs Micheál Martin welcomed the agreed text, which he described as strong and ambitious.
He said it was a real contribution to international humanitarian law, and said he is proud Ireland was able to play a strong part in its adoption.
