Original sentence: Carlingford Lough (Irish: Loch Cairlinn) is a glacial fjord or sea inlet that forms part of the border between Northern Ireland to the north and the Republic of Ireland to the south
Edited sentence: Carlingford Lough (Irish: Loch Cairlinn) is a glacial fjord or sea inlet that forms part of the international border between Northern Ireland to the north and the Republic of Ireland to the south