The Cabinet has signed off on an additional €100 million aid package for Ukraine.
Tánaiste Simon Harris said the funding would be allocated for "non-lethal military equipment and support".
As the Cabinet gathered this morning to discuss ways to aid Ukraine, the Taoiseach said there is "no doubt" the US President's decision to pause military aid to the country is "a very, very serious development".
Micheál Martin described it as "a serious setback" and he called for "continued engagement between everybody".
That view was shared by the Tánaiste who said that European partners have been working extraordinarily hard in recent days to show not just solidarity but practical support for Ukraine.
But he added that there is still the essential requirement for the European Union and the US to work together on this issue.
The Government has also approved draft legislation to drop the need for UN approval when deploying Irish peace keeping troops abroad.
Aontú Leader Peadar Tóibín criticised the move, he claimed the government is "using" the crisis in Ukraine to send Irish Defence Forces on EU military missions.
The Taoiseach has insisted the proposed changes to the Triple Lock system would "in no way undermine" Ireland's military neutrality.
