Brexiters are refusing to accept their victory

If, in 2015, you had offered Leavers Boris Johnson and Jacob Rees-Mogg the outcome now available through Prime Minister Theresa May’s agreement — an end to free movement of people and near total withdrawal from the primacy of European Court rulings — they would have accepted it with alacrity. Yet they are now holding out over the UK’s right to escape the limits on trade that are part of the Irish backstop. They have turned an independent trade policy into the wheel on which their dream may be broken.