5. Like the border itself, the UK 🇬🇧 and Ireland 🇮🇪 share a long, complicated and intertwined history.
Irish citizens have permanent right to live and work in the UK.
Meanwhile people born in Northern Ireland are also entitled to Irish citizenship.
https://en.wikipedia.org/wiki/British_nationality_law_and_the_Republic_of_Ireland
6. Ireland 🇮🇪 and the UK 🇬🇧 do however disagree on some points.
Ireland does not recognise the UK's claim to Rockall, an uninhabited tiny island in the North Atlantic.
https://en.wikipedia.org/wiki/Rockall
#geoweirdness
BTW - there was some recent Rockall news: https://www.theguardian.com/uk-news/2023/jul/21/rockall-atlantic-chris-cameron-survival-gear
(and yes, we do have an alert set for Rockall news. Obvs)