They were joined by former US Senator George Mitchell, former Prime Minister Sir Tony Blair and former Taoiseach Bertie Ahern at Queen’s University Belfast, which is hosting a three-day Agreement 25 conference.
A bust of Mr Mitchell, who chaired the talks that led to the 1998 agreement, was unveiled at the event, which was also attended by Northern Ireland political representatives.
5. Agreement 25
Senator George Mitchell speaking at Queen's University Belfast. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye
6. Agreement 25
The Agreement 25 Conference at Queen’s University Belfast included the unveiling of a bust of Senator George Mitchell. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter / Press Eye
7. Agreement 25
Former American President Bill Clinton is greeted by former Taoiseach Bertie Ahern at Queen’s University, where they were taking part in a conference. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter / Press Eye
8. Agreement 25
Former American President Bill Clinton with Senator George Mitchell, Hillary Clinton and former Taoiseach Bertie Ahern at Queen’s University. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter / Press Eye