On Friday 23 February, the president of the European Council, Donald Tusk, warned Britain’s prime minister, Theresa May, that the United Kingdom’s current position was based on “pure illusion” and that London could not “cherry-pick” or request an “à la carte single market”. He said “this will remain our primary and unchangeable principle”.
This was a reaction on the Council leader’s part to information in the British press on Friday that the British government is...