May is chasing a fantasists’ Brexit. She must change course now | Rafael Behr

It’s clear a sensible withdrawal will involve compromise. No one will be totally happy but a brave PM would do what was rightWho can say, hand on heart, that the customs union was uppermost in their mind in the polling booth on referendum day? Each vote contained a multitude of motives, and the subtleties of the EU’s common external tariff were in the mix somewhere, but as obscure chemical elements in a complex electoral compound. The only certain description we have of that substanc