Taoiseach Leo Varadkar has said that Irish de-mining equipment has arrived in Ukraine in the past few weeks and Ireland was helping Ukraine to use it.
A Government spokesperson said that two mine-clearing vehicles, known as mine flail units, had arrived in Ukraine and that Irish defence personnel had been training Ukrainian troops on operating the units in Poland.
The Taoiseach was speaking on arrival in Paris at a summit organised at short notice by French president Emmanuel Macron designed to boost support for Ukraine.
"When it comes to the European Union, Europe as a whole, the most important thing we now need to do is to honor the commitments we've already made to Ukraine, so to make sure that that €50 billion that we agreed a few weeks [in macro-financial support] ago starts flowing," he said.
He added: "From our point of view as Ireland, only in the last couple of weeks, anti-mining equipment, or de-mining equipment, has arrived in Ukraine, and we're helping Ukrainian soldiers to learn how to use that.
"And we're also seeing if there's other ways we can help it, particularly around things like air defense."
Mr Varadkar said those at the summit were in Paris "to say that we stand by Ukraine for as long as it takes, to send a very clear message to the Kremlin that Russia cannot win this war."
He added: "We're here to discuss what more we can do to help Ukraine in the coming months and years, and that involves military support – non-lethal in our case - but also financial aid, and also humanitarian and political support."
The meeting was called at short notice due to, according to French officials, an escalation of Russian aggression in recent weeks.
Read more:
Two years on: The war in Ukraine in numbers
The second anniversary of Russia's invasion of Ukraine coincided with the fall of Avdiivka, a strategically important city in eastern Ukraine, and the death of Alexei Navalny, the jailed Russian anti-corruption campaigner.
Mr Macron has called the meeting in the Élysée Palace expressly to send a message to Mr Putin that he is not going to win and that whatever setbacks have hit Ukraine, European resolve is solid.
One official said the objective was to crush Mr Putin's narrative.
However, European unity is not solid. Neither Hungary nor Slovakia, whose leaders have expressed admiration for Mr Putin, are sending representatives.
The Taoiseach is joined by the leaders of Germany, Spain and the Netherlands. British foreign secretary David Cameron will attend, as will senior US and Canadian officials.
The summit will not see the announcement of new weapons supplies.
Rather, leaders will look for ways to be more efficient on the ground as well as to increase coordination between Ukraine and its allies.
Paris conference to belie 'doom and gloom' on Ukraine, Élysée says
"We want to send Putin a very clear message, that he won't win in Ukraine," a presidential adviser told reporters in a briefing. "Our goal is to crush this idea he wants us to believe that he would be somehow winning."
After initial successes in pushing back the Russian army, Ukraine has suffered setbacks on eastern battlefields, with its generals complaining of shortages of arms and soldiers.
French officials said the security conference in Munich earlier this month, which coincided with the death of Mr Navalny, was all about "doom and gloom", and that Mr Macron was keen to dispel that.
"We're neither doomy nor gloomy," the French adviser said. "We want Russia to understand that. Russia will have to count on us all collectively to end this war and restore Ukraine's rights."
However, the adviser said the working meeting will not be an occasion to announce new weapon deliveries to Ukraine but more to brainstorm ways to be more efficient on the ground, as well as increase coordination between allies and Ukraine.
With additional reporting by Reuters
