Mon 04 Apr 2003Trimble says parties reaching 'moment of truth'Ulster Unionists would be disappointed if significant progress was not made in the peace process by Thursday night, their leader Mr David Trimble said today.As the North prepared for US President George Bush's arrival and participation in talks on the process, Mr Trimble warned there would be "disappointment" if republicans failed to endorse policing and wind down the IRA as a paramilitary group.