Nationalist chiefs sign pact to make Burnham ‘the last UK prime minister’

A summit of Scottish, Irish and Welsh leaders follows U.S. President Donald Trump’s surprise backing of calls for a united Ireland.

Copy Link Copied Share via email Share on X Share on WhatsApp Share on LinkedIn Scotland's John Swinney, Wales' Rhun ap Iorwerth, and Ireland's Mary Lou McDonald and Michelle O'Neill speak to the media. September 14, 2026 5:13 pm CET By Shawn Pogatchnik DUBLIN — The leaders of the three nationalist parties that want to break up the United Kingdom have signed a joint agreement to coordinate their rebel ambitions.

Monday’s signing ceremony by the Scottish National Party , Ireland’s Sinn Féin and Wales’ Plaid Cymru creates a fresh headache for U.K. Prime Minister Andy Burnham — who’s already on the constitutional defensive after the weekend’s surprise intervention by Donald Trump .