Europe's 'Brexit' Drama Pits David vs. Boris Here's what you need to know By Newser Editors, Newser Staff Posted Feb 22, 2016 4:22 PM CST 11 comments Comments Britain's Prime Minister David Cameron, right, and London Mayor Boris Johnson. (Toby Melville/Pool Photo via AP) (Newser) – Britain will vote in June on whether to remain in the European Union, which is why the odd word "Brexit"—a combination of "British" and "exit"—is suddenly showing up in headlines around the world. Some related coverage: For a nuts-and-bolts explainer on the vote and why it's creating such "vast uncertainty" in Europe, see USA Today. Prime Minister David Cameron called the referendum after winning concessions at an EU summit last week, and the AP breaks down some related questions. Cameron wants Brits to stay in the EU, but London Mayor Boris Johnson, a fellow Conservative, is pushing for a "leave" vote. The mayor thinks fears related to an exit are exaggerated, and Cameron mocked Johnson's views in a speech Monday. The Telegraph has details. Johnson's opposition has caused the British pound to fall, reports the Wall Street Journal. Also not sold on the idea of staying in the EU? The nation's top supermarkets, reports the Guardian. Polls are close, and many Brits are undecided, notes another primer on the "insane" debate, this one at Slate. A British exit means "uncharted waters," says an AFP analysis. The Economist tells the story via graphics.