A Citizens' Assembly could be established to discuss the topic of Ireland's military neutrality, the Taoiseach has suggested.
Micheál Martin told the Dáil that the actions of Russian President Vladimir Putin have fundamentally changed the rules-based order and has left the European Union exposed in terms of security.
He said that a discussion on military neutrality was required, but added that now was not the right time.
During Leaders' Questions, People-Before-Profit TD Richard Boyd Barrett condemned what he described as a "murderous war" in Ukraine.
However, he said that the crisis should not be used as an excuse to abandon military neutrality and form closer alliances with NATO.
Mr Boyd Barrett said that more militarism is not the answer.
He told the Dáil that Ireland was respected for its neutrality, and it has served the country well.
In response, the Taoiseach said that Ireland was a member of the United Nations Security Council, which was "about as good a benchmark for our credibility" as he could think of.
He added that while Ireland has always been militarily neutral, it has not always been politically neutral.
Mr Martin said that the international community tried to solve the crisis through diplomacy, but that proved unsuccessful.
"Russia stands condemned in the international court of opinion," he said.
A Citizens' Assembly brings a group of people together to discuss and consider legal or policy issues.
The assembly meets and makes recommendations to the Oireachtas.
Last week, former minister for foreign affairs Charlie Flanagan said Ireland needs to face reality on its policy of military neutrality and re-examine that long-held position in light of the Russian invasion of Ukraine.
Speaking on the RTÉ News 'Your Politics' podcast, he said he would not like to see the suggestion framed as "opportunism", but added there was an "opportunity" for Europe to work together.
