The terms of the Belfast Agreement are expected to come under fire at today's conference in Belfast of the Ulster Young Unionist Council, the youth wing of the Ulster Unionist Party.
Conference speakers include the North's First Minister and UUP leader, Mr David Trimble, and his fellow Westminster MP, Mr William Ross, one of the more trenchant critics of the Good Friday pact.
Motions for discussion include one which opposes Sinn Fein participation in the Northern executive without prior disbandment of the IRA and another calling for resistance to changes in the name and structure of the RUC.
Meanwhile, Mr Trimble has been urged by the Sinn Fein Assembly member for North Belfast, Mr Gerry Kelly, to decide whether he supports the agreement or not.
"If not, his position as First Minister surely becomes untenable," Mr Kelly said in a statement.
"David Trimble can no longer pander to the rejectionists within his own party. He must set about his job as First Minister in a constructive and inclusive manner. The first step in this direction is implementing fully the agreement."
Sinn Fein has been criticised by the 32-County Sovereignty Movement which alleged the party was "trapped" by the terms of the Good Friday pact. The movement, which security sources regard as the political wing of the "Real IRA", said many republicans had accepted the agreement because "prominent representatives" presented it as a means of undoing "the sectarian system", then moving to a united Ireland.
"Those who have accepted Stormont and been ensnared in the British administration are trapped. The British are insulated from pressure to leave Ireland, and are free to demand weapons as a gesture of the end of the Irish opposition to British rule," the movement said.
Five republican prisoners serving life sentences were freed from the Maze Prison yesterday under the terms of the agreement. Two had been convicted of murdering members of the security forces and another of murdering an assistant prison governor. All had served between eight and 10 years of their sentences.
The number of prisoners to date given early release under the agreement is 68. It is expected that about 200 will be free by Christmas, with a further 200 leaving prison within two years.
A Sinn Fein councillor in Derry, Mr Cathal Crumley, has accused the RUC of "intensifying its war of attrition against the nationalist community in an attempt to subvert the peace process".
Commenting on the admission by a Sinn Fein member in Derry that he had been a police informer, Mr Crumley said the man had been supplied with drugs and money in return for information on local republicans.
"The RUC has no part to play in this conflict-resolution process. Its existence is central to the problem and must be removed from the political equation," Mr Crumley said.
The RUC press office said it did not comment on individual allegations but had always made clear that in combating serious crime the police relied heavily on intelligence-gathering and used "all lawful means, including the use of informants".
A petition calling for "total and complete decommissioning of all terrorist weapons" was launched at Queen's University Belfast yesterday by an organisation called Students for Peace.
A spokesman, Mr Vincent McKenna, said that within two hours 1,000 students, both unionist and nationalist, had signed the appeal. "This petition is now going to be sent to universities in Britain, Ireland and America, and we hope to have one million signatures before we present it to all the key players in the peace process, including Bill Clinton."