LONDON—British voters will decide in one month whether or not to deal a historic hammer blow to European integration by putting their island nation on an independent path outside the European Union.
The choice on June 23 is simple: In or Out. But the ramifications of a vote to leave are complex and uncertain.
The campaign has hardly been a model of cool, reasoned argument. “Leave” campaigner and former London Mayor Boris Johnson has compared the EU’s goals to those of Adolf Hitler, while “Stay”-supporting Prime Minister David Cameron has suggested that a decision to leave the 28-nation bloc would please Islamic State extremists.
EU advocates argue that leaving the bloc would batter Britain’s economy, costing each household thousands, while the “Leave” side says Britain has blithely forfeited the independence it once fought so fiercely to defend—and can reclaim it only by walking away from the EU and its byzantine rules.
