Good Friday Agreement: Bertie Ahern says political instability is one of his greatest regrets 

Former taoiseach hails peace process but says parties should not be able to collapse democratic institutions in the North 

Former taoiseach Bertie Ahern said lingering political instability is among his greatest regrets about the Good Friday Agreement signed on April 10, 1998.  Picture: Niall Carson/PA

Former taoiseach Bertie Ahern regards lingering instability of political institutions in the North as one of his biggest regrets from the talks leading up to the Good Friday Agreement which was signed on April 10, 1998.

The final week of negotiations brought many challenges for Mr Ahern, including personal grief on the death of his mother Julia following a heart attack.