Global leaders have been visiting Northern Ireland to mark 25 years since the Good Friday Agreement, the peace treaty that bought an end to 30 years of conflict. US President Joe Biden, who boasts of his Irish heritage, was among those calling on the leaders of Northern Ireland to restore power-sharing in Stormont which is currently in deadlock. This week, former US president Bill Clinton, who played a key role in bringing peace to Northern Ireland, will also be visiting Belfast. But can the leaders of today demonstrate the bravery and pragmatism demonstrated by their predecessors in 1998? On the Sky News Daily, Sky's senior Ireland correspondent David Blevins speaks to ex-prime minister Tony Blair, who was a driving force behind the Good Friday Agreement.