British Prime Minister Boris Johnson on Wednesday met leaders in Northern Ireland, the key battleground in Brexit and the focus of increasingly tense rhetoric on both sides of the Irish Sea.
He arrived in Belfast on Tuesday night, amid warnings from Irish leaders that his vow to leave the European Union, with or without a deal, risks breaking up the United Kingdom. Those warnings continued ahead of meetings on Wednesday.
"For everybody across society, Brexit has raised fundamental questions around the wisdom and the sustainability of the partition of our island," Mary Lou McDonald, the leader of republican party Sinn Fein, told BBC radio.
"In the event of a hard Brexit and a crash Brexit, I don't know for the life of me how anybody could sustain an argument that things remain the same."
"It's certainly not to deal with it in a way that breaks up the United Kingdom."