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.
1. Agreement 25
Attending the Agreement 25 Conference at Queen’s University Belfast marking the 25th anniversary of the Good Friday Agreement. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye
2. Agreement 25
Former Prime Minister Tony Blair speaking at the Queen's University event. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye
3. Agreement 25
As part of the conference a bust was unveiled of Senator George Mitchell, who also served as Chancellor of Queen's University for 10 years. Left to right: Mr Mitchell, his wife Heather, Hillary Clinton, Bill Clinton and Tony Blair. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye
4. Agreement 25
Senator Mitchell at the unveiling of the bust. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye