Sinn Féin have blamed the British government for the current stalemate in the peace process.
Speaking this afternoon at the reconvened Forum for Peace and Reconciliation, Sinn Féin's president, Mr Gerry Adams, said the failure of the British government to fully implement the terms of the Belfast Agreement had destablilised the process.
The result, he said, was that republican and nationalist confidence in the process was being undermined
"Regrettably, over the last four and a half years these commitments on policing, demilitarisation, equality, human rights and the Irish language have not been honoured," he said.
"[Mr Blair's] government's failure to act on these matters and its decision to move outside of the Agreement and suspend the political institutions, in the midst of an ongoing unionist paramilitary murder campaign, is disastrous."
However, he added, while the Agreement was in crisis, there was absolutely no alternative but to make it work.
"This is a very serious crisis - clearly the most serious since the Agreement was reached - but one important thing on which all of us here today must agree and that is that the Good Friday Agreement is the only show in town," he said
Meanwhile, SDLP leader, Mr Mark Durkan said the Forum could "enhance unionist appreciation of the Agreement by showing that its framework of accommodation and assurance would endure" regardless of the constitutional position of Ireland.
He urged the Forum to reaffirm the principle of Irish community by consent which it had failed to when it last sat in 1996. He also urged members to reassure people that if there was a united Ireland that would not dissolve the Agreement.
"A formal understanding that a referendum decision on the future for a united Ireland would not dissolve the Agreement is unlikely to create any immediate change in attitudes to unity," he added.
"But it could also enhance unionist appreciation of the Agreement by showing that its framework of accommodation and assurance would endure not just on this island but between the islands.
"Underlining that the Agreement would remain hardwired into United Ireland could help to dispel misapprehensions like that the Agreement is a one way affair, that its principles are purely ephemeral pending a head count.