Gerry Adams has slammed the Dublin Government as the "most incompetent ever" in dealing with Northern Ireland.
The Sinn Fein president also launched a blistering attack on Taoiseach Enda Kenny, who had criticised Mr Adams' stance during the Stormont House Agreement talks as "outrageous".
Less than a month after the agreement, Mr Adams blasted Mr Kenny's administration as "the most deficient, inefficient and incompetent in dealing with the north".
And he repeated his assertion that Dublin's approach during the negotiations was "amateurish and hamfisted" and "little more than a charade".
Mr Kenny told the Dail last week he wanted to take Mr Adams "to task" for his attitude and said Deputy First Minister Martin McGuinness "was quite prepared to make much more progress".
Mr Adams hit back last night, claiming: "As someone who has dealt with every Irish Government since Charlie Haughey's time, including another Fine Gael Government, this administration led by Mr Kenny is the most deficient, inefficient and incompetent in dealing with the north."