The Taoiseach has said he will contact Ulster Unionist leader David Trimble tomorrow in an effort to convince him to re-enter the review of the Good Friday Agreement.
In Dublin this evening, Bertie Ahern said he was 'disappointed' at the UUP's decision to withdraw from the review.
Mr Ahern said the past had shown that suspensions and exclusions do nothing for the short term or the medium term, and certainly not for the long term.
He said the politics of exclusion 'do not work'.
The review of the Good Friday Agreement has been continuing in Belfast.
On withdrawing his party from the review, David Trimble said the failure to exclude Sinn Féin after the attempted abduction of a dissident republican in Belfast was appalling.
Both the main unionist parties had called for sanctions against Sinn Féin after a claim by the Chief Constable of the PSNI, Hugh Orde, that the IRA was behind the abduction.
Mr Orde repeated his assertion yesterday but said he believed the IRA had no intention of going back to war against the North's security forces.
Sinn Féin in talks with Blair
Earlier Sinn Féin's Gerry Adams and Martin McGuinness held what was described as a 'private, low profile' meeting at Downing Street with the British Prime Minister Tony Blair.
Sinn Féin sources said the meeting at Downing Street was part of their efforts to get some progress back into the peace process.
