Campaigners against cluster bombs say the main manufacturers and stockpilers of the munitions will be forced to accept a ban if one is agreed at a two-week conference which opened at Croke Park in Dublin today.
130 countries are working to agree a treaty that would be widely supported.
However, the weapons' main producers and stockpilers - including the United States, Russia and China - are against any such treaty move and are not represented at the conference.
Speaking on RTÉ Radio's Drivetime, Simon Conway of the campaigning group, Landmine Action, said he believed such countries would have to accept a ban.
The Minister for Foreign Affairs Michaél Martin opened the conference this morning.
Mr Martin said he is hoping for an ambitious outcome to the conference that would be widely supported and would set the international standard.
The Secretary General of the UN, Ban Ki-moon, delivered a video message at the start of the conference, which is being attended by representatives from over 100 countries.
It is the largest international conference of its kind ever hosted by Ireland.
Efforts to ban the use, manufacture and trade of cluster munitions have gained momentum over the past year.
It follows widespread revulsion about the impact of these weapons that open in mid air, and randomly scatter dozens of individual bomblets over a large area. They can kill people years after a conflict ends.
Some countries will lobby to exempt certain weapons or for a long transition period. Other countries that use cluster bombs such as the US, China, Russia and Israel will not be in attendance.
Grethe Ostern, joint head of the Cluster Munitions Coalition (CMC) umbrella group, said: 'Governments have been talking about the dangers of cluster bombs for years.
'More delays mean more injuries and death for ordinary people. We have a unique opportunity to ban cluster bombs in Dublin. It is now or never.'
- Nine News: Joe O'Brien, Defence Correspondent, reports on the start of a 12-day international conference on cluster bombs at Croke Park
- Nine News: Sean Whelan, Europe Editor, reports from Serbia, which was the last place in Europe to be hit by cluster bombs
- Six One News: Joe O'Brien, Defence Correspondent, reports that the conference is aimed at securing a treaty to ban cluster bombs
- Six One News: Sean Whelan, Europe Editor, meets victims of the most recent use of cluster munitions in Europe, in Serbia in 1999
- Six One News: Thomas Nash of the Cluster Munitions Coalition explains why an international agreement on the bombs is hugely important
- One News: Joe O'Brien, Defence Correspondent, reports that the US, China and Russia, who regularly use cluster bombs, are not attending the conference
- One News: Sean Whelan, Europe Editor, speaks to the victims of NATO cluster bombings in Serbia nine years ago
- One News: Joe O'Brien says there is hope that the countries not attending will follow what is agreed at the Dublin conference
- Morning Ireland: Brendan Fitzpatrick reports that a two-week conference to discuss the banning of cluster bombs opens in Croke Park today
- Morning Ireland: Micheál Martin, Minster for Foreign Affairs, says cluster bombs cause indiscriminate harm to innocent civilians
- Morning Ireland: Cian McCormack reports that it is hoped that a text for a treaty banning cluster bombs could be drawn up by next Wednesday
