From my article in The Sunday Times today:

“The whole point of this is that it is true that every European member state has the power to decide who is to be the citizen of their country. But that does not mean they can ignore what the rest of the world understands at the conceptual level what ‘citizenship’ is or that we can adopt policies that undermine our European partners or the European project itself.

“‘Others do it’ is not a defence either.”

Read the full article here.