Explainer: Britain's 'Super Saturday' Brexit showdown in parliament
![](https://r58b8e.a2cdn1.secureserver.net/wp-content/uploads/2018/02/worldnewsdyil2auoc8za.gif?time=1719640829)
Prime Minister Boris Johnson faces a Brexit showdown with parliament on Saturday after clinching a last-minute divorce deal with the European Union that his Northern Irish allies oppose.