Leaders of Scotland’s SNP, Wales’s Plaid Cymru and Northern Ireland’s Sinn Fein meet in Cardiff to sign a memorandum of understanding asserting the right of their peoples to choose independence or Irish unity. The document says the “Westminster” government has no right to block such decisions and frames the aim as self-determination for each nation.

The agreement comes amid renewed attention on the future of the UK and Ireland after US President Donald Trump said he would back a “united Ireland.” Sinn Fein’s Michelle O’Neill links this to the idea that debate on unity remains active. All three outlets describe the leaders as acting in their party capacities, despite O’Neill also serving as first minister of Northern Ireland and Swinney and ap Iorwerth heading devolved governments in their countries.

While they align on self-determination, their timelines and mechanisms differ. The SNP backs another Scottish independence referendum, which it says should occur within the current Holyrood term, while the UK government has said an immediate rerun is not planned. Plaid Cymru supports Welsh independence in the longer term and does not seek an immediate referendum. In Northern Ireland, Sinn Fein wants a vote on Irish reunification but such a “border poll” depends on a majority view and the legal framework of the 1998 Good Friday Agreement.