More than 20 years have passed since Alex Maskey became the first Sinn Féin lord mayor to pay his respects to the war dead at the Cenotaph at Belfast City Hall.
On 1 July 2002 he laid a laurel wreath at the monument, two hours ahead of the main council ceremony to commemorate the anniversary of the Battle of the Somme.
Maskey described his gesture as a "major step for republicans and nationalists on this island".
However, he would not attend the main ceremony that year, refusing to take part in a "military commemoration" of the World War One battle.
Since then, Sinn Féin politicians have always declined to attend Cenotaph wreath laying ceremonies in any official capacity.
In the years that have passed, there have been other firsts and many other gestures in a bid to promote reconciliation and good relations.
In 2016, the late Martin McGuinness travelled to France and Belgium as part of a two-day trip to World War One battlefields.
He laid wreaths at the sites where the Somme and the Battle of Messines took place a century earlier.
In July 2022, Michelle O'Neill laid a laurel wreath at the Belfast Cenotaph to commemorate the anniversary of the Battle of the Somme.
However, she declined to be drawn on why she did not attend the wider Somme commemoration event at the same venue that year.