It's never been used in the history of the EU, but Poland could be about to feel the full force of this powerful mechanism.
It's likely that a future UK-EU trade deal will be subject to approval by all EU member states and their sub-national parliaments.
Expect big companies to muscle in on the law-making.
The rocky relationship between Russia and the West is on a knife edge. But simple dialogue and face-to-face discussions can go a long way to easing tensions.
New research has found the UK parliament is fraught with institutionalised ableism
Other EU members don't want a neighbour that ignores air quality standards.
After Brexit, Theresa May says the UK will 'take back control of our laws'.
An eco-friendly EU withdrawal is still possible.
You might be familiar with Article 50, but Article 127 of another European treaty could be as important when it comes to Brexit.
The government is taking back control of British law with great eagerness. Here's what to look out for.
The difference between a customs union and a free trade area – explained.
The case of a man stripped of his EU citizenship offers some guidance for emigrants living in legally uncharted territory after the Brexit vote.
The European Union has a deep, and maybe unbreakable reach into our sporting life.
There is debate among lawyers on whether the process for a Brexit, once begun, can be stopped.
How does the UK go about disentangling itself from EU laws?
For many people around the world, it's a bit of a mystery.
The ruling signals part of a wider trend restricting access to welfare for EU migrants.
Few would advocate a withdrawal from the United Nations. But international law has a big impact on Britain too.
Yes, the way the EU makes its laws is complex, but it is done democratically.
UKIP leader Nigel Farage has attacked the European Arrest Warrant for putting British nationals at risk of extradition. Is he right?