TAOISEACH Enda Kenny was united with his British counterpart David Cameron in expressing disappointment at the breakdown of the Haass talks.
The Fine Gael leader last night called on the leaders of the five main political parties to "reflect" on the negotiations on a number of contentious issues relating to the Peace Process, which were led by former US diplomat Dr Richard Haass.
Dr Haass and his colleague presented the leaders with seven different drafts covering issues such as dealing with victims of The Troubles, the flying of flags and the staging of parades.
But despite the negotiations running into the early hours of yesterday morning, significant differences remained between the parties.
Sinn Fein president Gerry Adams said a basis for compromise on dealing with the past had been proposed adding: "Closure for victims and survivors is the real benchmark against which this proposition will in time be judged," he said.
But while the Democratic Unionists and Ulster Unionists pledged to take the document back for consultation with party executives, both expressed major concerns about elements of the proposed framework as it stands.
Mr Haass said a working group of representatives of the five parties would now be set up to try to find another way to build on the "significant progress" that had been achieved.
Prime Minister David Cameron said the failure to achieve a breakthrough was "disappointing".
A statement from the Obama administration said the negotiations represented "real progress" and urged parties to continue to work together to build on this progress".
Mr Kenny said the result of the talks would prove to be a "disappointment" for the people of Northern Ireland.
"It should be said that significant effort went into the talks. I hope that the period ahead can be used to build on that effort, and provide a basis for a future agreement," he said.