https://blogs.lse.ac.uk/europpblog/2023/04/13/ever-closer-union-and-the-philosophical-history-of-europe/
https://ukandeu.ac.uk/wp-content/uploads/2020/06/Mind-the-values-gap.pdf
https://foreignpolicy.com/2021/07/09/angela-merkel-german-chancellor-europe-trade-euro-refugees-crisis/