Martin McGuinness from IRA leader to peacemaker
Sinn Fein has agreed to a historic first meeting with the Queen following a special meeting of the party.
The Queen will meet Sinn Fein's Martin McGuinness at a charity reception in Belfast next week.
The former IRA leader has been a major figure in the Irish peace process and has been deputy first minister of Northern Ireland for five years.
Such a meeting would once have been considered unthinkable but will now be viewed as a significant milestone.
Twenty-five years ago, when the Queen visited Northern Ireland to mark her Silver Jubilee, the IRA threatened it would be a visit to remember.
BBC Newsline's political correspondent Martina Purdy looks back, and traces Martin McGuinness's journey from IRA leader to peacemaker.