Former British prime minister Tony Blair and former Taoiseach Bertie Ahern sign the Good Friday agreement on April 10, 1998. This year marks 25 years since the signing of the historic agreement. PA
The original Good Friday agreement. PA
Mr Ahern speaking at University College Dublin at an event organised by the Fianna Fail party to commemorate the 25th anniversary of the Good Friday Agreement in Dublin. PA
RTE television presenter Miriam O'Callaghan with former US president Bill Clinton, who appeared on Prime Time in April to mark 25 years of the agreement. PA
Erin McArdle, left, who was born on April 10, 1998, and her mother Caroline, hold The Telegraph which was published on the same day, at her home in Ballymena in Northern Ireland. EPA
Attendees of the 63rd Plenary of the British-Irish Parliamentary Assembly pose together in March on the steps of Parliament Buildings in Stormont in Belfast, to mark the 25th anniversary of the agreement. PA
Mr Blair and Mr Clinton hold hands an event to celebrate the 20th anniversary of the Good Friday Agreement in Belfast, Northern Ireland, on April 10, 2018. Reuters
British army soldiers from 2nd Battalion, The Prince of Wales Royal Regiment, leave Bessbrook British army base for the last time in South Armagh in Northern Ireland, on June 25, 2007. AP
Mr Blair, former US Senator George Mitchell and Mr Ahern, at Downing Street, London, to announce a review of the Northern Ireland peace process in July 1999. PA
Royal Ulster Constabulary Police officers stand on Market Street after a car bombing in the centre of Omagh in Northern Ireland, in August 1998. AP
Mr Blair argues his case for the Yes vote in the peace referendum at the University of Ulster in Northern Ireland in May 1998. PA
Ulster Unionist leader David Trimble, U2 singer Bono, and SDLP leader John Hume on stage for the 'YES' concert at the Waterfront Hall in Belfast in May 1998. PA
Mr Blair and Mr Ahern sign the Good Friday Agreement on April 10, 1998. PA
Mr Blair, former US senator George Mitchell, and Mr Ahern pose after signing the agreement. AP
Mr Blair greets Mr Ahern at Downing Street, London, in July 1997. PA
Mr Blair and a Belfast schoolgirl, Margaret Gibney, inside 10 Downing Street in June 1997. Ms Gibney had become popular around the world after she asked Mr Blair to bring peace to Northern Ireland. PA
The Sinn Fein's deputy leader, Martin McGuinness, and leader Gerry Adams at a rally in Belfast in December 1994. AP
People gather at the scene of a car bomb explosion outside the Sinn Fein headquarters in West Belfast in Northern Ireland in September 1994. AP
British troops with armoured vehicles surround a blazing barricade near the Andersonstown Police Station in Belfast in 1979. AP
British troops look on as members of the Ulster Defence Association march through Belfast in 1972. AP
