The Green Party has dropped its insistence on retaining the current Triple Lock mechanism that governs sending troops abroad on peacekeeping missions.
The party's policy council has recently voted unanimously to drop the necessity for a UN resolution.
Instead, the party says defence personnel could be deployed overseas with Dáil approval and a decision by a regional organisation as authorised in the UN charter.
The Triple Lock means that in order to send more than 12 troops abroad, the move must be supported by Government, the Dáil and a UN resolution.
Green Party leader Eamon Ryan told the Dáil last week that the mechanism is not effective.
Both Fine Gael leader Leo Varadkar and Fianna Fáil leader Micheál Martin have also questioned whether the Triple Lock should be retained.
The issue will be discussed at the new Consultative Forum on Security which meets next month.
It is understood that the Government will gauge the opinions voiced at the forum before consideration is given to any possible move to change the current Triple Lock system.
Any move to modify the mechanism could be contentious. People Before Profit TD Richard Boyd Barrett told the Dáil last week that the forum was part of a sustained campaign by Fianna Fáil and Fine Gael to dismantle Irish neutrality.
He said the Government was cynically using Russia's barbaric invasion of Ukraine to advance a project within NATO and the EU of ratcheting up militarisation.
During the same debate, Independent TD Cathal Berry, a former member of the Defence Forces, said the difficulty with the Triple Lock came when it was extended in 2002 to cover all deployments overseas rather than just UN missions.
One way of improving how it works, he said, could be by adding to the list of exemptions to include humanitarian operations or evacuations.
Or alternatively, the threshold for the number of troops could be increased from its current number of 12 to 30 or 50 or 100.
