The border across the island of Ireland is to become the only direct frontier with Europe, which is a major political problem.
Nearly six months on from the UK's shock vote, there looks very little room for manoeuvre in negotiations.
Conflict resolution across the world frequently leaves LGBT citizens behind.
The EU is tightening security on its own borders.
Theresa May desperately needs room to manoeuvre after letting Brexit bravado get the best of her.
Proposals for the UK government to move its border to Irish ports of entry show how many options are now on the table.
Prisoners become more dangerous when grouped together.
To achieve independence, history says you should play a long game.
The difference between a customs union and a free trade area – explained.
Perverse mental processes take over when the chips are down. And there's something you can do about it.
After voting to remain in the EU by 11 points, Northern Ireland must work out where its interests lie – and how best to defend them.
The UK's regions – England, Scotland, Wales and Northern Ireland – hold very different views about whether to remain in the EU, which means the country might not survive a Brexit in its current form.
A surprising level of anti-EU sentiment among unionists should be on Remain's radar.
It's the first time the 'Green and White Army' and the 'Boys in Green' have competed together in a football tournament – and it's actually going rather well.
How will the football influence the vote? Here are the possibilities ...
The Northern Ireland peace process will not implode on a Brexit, but the EU has done a lot to help it along.
France are favourites, Albania are playing and there are more teams than ever before. Your essential guide to Europe's summer football festival.
We often overlook how languages gets caught in political crossfire - and not only in relation to Muslims.
The home secretary has announced that the threat of terrorism related to Northern Ireland is now highly likely in Britain.
More candidates mean a change in politics, but it's not as easy as creating policies such as all women shortlists.