Why did Cameron call the referendum? - L'actualité en anglais

David Cameron a demandé le référendum sur le Brexit. Il était alors Premier ministre, et a démissionné suite aux résultats.

Pourquoi le referendum sur le Brexit a eu lieu ? (texte en anglais)

Given the chaos and divisions that have ensued, why did then UK prime minister David Cameron call the referendum in the first place? The right wing of the Conservative party, the UKIP and its leader Nigel Farage, had been complaining frequently about the damage that the EU has caused to the country. David Cameron, rejected calls for a referendum back in 2012, but announced less than a year later that his Conservative government would hold one if re-elected in 2015. In February 2016, David Cameron made it known that the referendum would be held on the 23rd of June that same year;