Jo Johnson’s resignation underlines yet again the disaster that is Brexit.
But the repeated call for a second referendum puts a high level of responsibility on the Remain camp to flesh out details and consequences.
The Liberal Democrats, as the only party campaigning unequivocally for Britain’s membership of the European Union, must take a lead.
A second referendum would mark only the beginning of a momentum which must look far beyond the headlines and slogans of 2018.
Let us speculate, therefore, that there is a second vote and we win.
Then what?
Could Remain celebrations really light up Britain’s streets with political leaders mouthing off sound bites about healing divisions and the rest, while half the country feels cheated.
How can anyone think that will work?
Can a new government really tear up Article 50 and, tail between its legs, keep Britain in the European Union as if nothing has happened?
That will not do the business either.
There is one way out. But to take it on board we must accept that Brexit is symptomatic of a wider challenge. It accompanies an overall questioning of the European Project seen through the rise of the populist right, increased separatist demands and rebellion among the east and central European countries.
Brexit is the strand which has been put to the vote and the EU lost.
Any forward-looking institution would have reacted by looking publicly into what had gone wrong and how problems should be addressed. It would have allowed a formal debate on reform, ensuring that the discussion would be in the arc of our lives, just as the Brexit debate now is.