Ulster Unionist leader David Trimble outlined a plan today which refuses to countenance a return to power-sharing without a "real transition to peace and democracy" by republicans.
The party leader, who faces a no-confidence motion at next week's meeting of the Ulster Unionist Council, wrote to party members recommending the six-point plan.
The document also states that the party has not endorsed the British-Irish joint declaration because of the failure of republicans to deliver acts of completion.
Earlier today his Ulster Unionist colleague MP Jeffrey Donaldson repeated his call for his party to reject the British and Irish Governments' joint declaration.
The Council members will decide on Monday whether to back Mr Trimble's plan or a motion by anti-Agreement MP Jeffrey Donaldson to reject outright the joint declaration.
Mr Donaldson said Ulster Unionists must send a clear signal to Downing Street that they would not accept the document.
He said: "What we are looking for is unequivocal rejection of the joint declaration. I believe that it gives Dublin a role in the internal affairs of the assembly for the first time.
"There is a proposal to grant an amnesty for on-the-run, proposal to leave Tyrone, Armagh and Fermanagh bereft of any security presence."
Speaking after a meeting of the parties' 110 strong executives. Mr Donaldson said that Mr Trimble's amendment, which fell short of rejecting the joint declaration, did not go far enough.
Mr Trimble said that the row was shifting the focus of putting pressure on republicans to get rid of their illegal weapons.
This Monday's meeting will be the 10th time in five years that Mr Trimble has had to defend his policy of sharing power with Sinn Fein. In the previous nine meetings he has managed to face down his critics within the party.
PA