On a weekend golf visit to Ireland, Donald Trump broke with generations of American diplomatic restraint by openly endorsing Irish unification — a question that every previous US president had deliberately left untouched, knowing it to be inseparable from Northern Ireland's long history of sectarian grief. Standing on Irish soil beside the Irish prime minister, Trump called unification 'fantastic' and 'inevitable,' while the British government responded within hours, reminding the world that no referendum would occur without majority support. Whether the remarks signal a genuine reorientation