The Ulster Unionist Party is calling on all religious, business and community leaders who supported the Belfast Agreement to put pressure on the Provisional IRA to decommission.
UUP Assembly member Dr Esmond Birnie said that in recent years key opinion-makers had suggested that his party needed to show flexibility and a willingness to compromise.
"I honesty believe we have followed such advice as far as it was safe to do so.
"I now want to hear such groupings as the Confederation of British Industry, the Institute of Directors, Chambers of Commerce, G7, ECONI, the Catholic bishops, the Presbyterian Church, Democratic Dialogue and New Agenda raising a concerted chorus that there can be no just and lasting peace whilst we have organised banditry and massive arms stockpiles.
"This is not a unionist demand, this is not a nationalist demand. It is common-sense morality."
Mr Birnie said the UUP sincerely wanted the Belfast Agreement to work. "We have done all that we can reasonably be expected to do," he said. "The North-South aspect is agreed, the departmental structures and prisoner releases have proceeded. We have not been slack in fulfilling our obligations.
"Other parties, notably Sinn Fein and, in a similar manner, the PUP, have failed to move on their obligation to seriously promote disarmament. Now is the time for us to hear loud and clear all the voices of so-called civic society, demanding that decommissioning starts now. After all, if the process has to be completed by May 2000, a bit of haste would be in order."
The UUP would be to the forefront in addressing environmental, education and economic issues, he added. "The economic potential of lasting peace and political stability is great."