Taoiseach Enda Kenny has ruled out treaty changes as part of any long term efforts to solve the eurozone crisis or to prevent a reoccurrence of the Greek debt problems.
His remarks are at odds with the European Commission President Jose Manuel Barroso's call for changes to the EU treaties to allow a broader response to the long term difficulties facing the single currency.
Speaking in Warsaw, Mr Kenny admitted there had been a lot of discussion among eurozone leaders about where the crisis was headed, and that there would be a good deal more discussion before heads of government meet in mid October.
When asked if he supports Treaty change in order to facilitate a deeper fiscal union, Mr Kenny said:
"I don't ... I've made this known to other leaders. It's very important that having put Lisbon in place that the governments of the EU work that treaty in the way that it was intended ... I think we have to get on with what we have now, and focus on the potential of the Lisbon treaty to put Europe where we believe it should be, right up there at the very top."
Earlier Mr Kenny spoke to the Greek Prime Minister George Papandreou at the EU Partnership Summit in Warsaw.
"Mr Papandreou is confident that his country can keep its end of this particular bargain."
"It's very difficult on any country in a bailout situation - we know that from our own experience - and it's probably more difficult for Greece, and clearly the troika will come up with their assessment."
Mr Kenny added that, following a bilateral meeting with the Finnish prime minister Jyrki Katainen, creditor countries had welcomed Ireland's efforts in implementing the terms of the bailout.
"Larger countries funding this bailout are very happy to hear from Ireland that that money is being used effectively and the decisions taken by the govt are heading in the right direction.
"We're under no illusions about the scale of the challenge, they're happy to point out to their colleagues that of all the countries of Europe Ireland is the one making the most progress."
European stocks fall on debt crisis fears
World stocks have fallen again, with European shares on track to mark their biggest quarterly loss since the collapse of Lehman Bros three years ago.
The euro also slipped, on course for its biggest monthly drop in nearly a year, weighed down by the lack of visible solution to the eurozone's deepening debt woes.
The boost to the euro generated by Germany's parliamentary approval for new powers to the European Financial Stability Facility (EFSF) proved fleeting after data showing German retail sales slumping at their fastest pace in more than four years in August.
"German retail sales were disappointing, so things are pointing to a further economic slowdown ahead. On top of that, the sovereign debt issue is ongoing," said Valentin Marinov, currency strategist at Citi.
"To see the euro rebound we have to see more steps taken towards extending the lending ability of the EFSF and more efforts to prop up growth."
Comments from German Economy Minister Philipp Roesler that the Bundestag had little appetite to allow the eurozone's bailout fund to be leveraged to help the bloc's stricken economies did little to lift the single currency, which fell 0.7% against the dollar at $1.3495 having fallen to a day's low of $1.3486 earlier.
An unexpected rise in euro zone inflation for September is also moderating hopes that the European Central Bank would ease monetary policy to support weakening European demand.
The deepening economic gloom has prompted investors to slash bets on risky assets in the quarter to ending September.