Is Theresa May's Brexit Plan B an elaborate bluff?
"Threatening to walk away if you don’t get a good deal is a standard negotiating tactic, but if the threat is empty you look a bit foolish," says Charles Grant, director of the Centre for European Reform think-tank. "Everyone knows she is not an ultraliberal," he says, adding it is inconceivable that parliament would vote for big cuts to environmental, employment or social laws.