
https://www.bruegel.org/analysis/defending-europe-without-us-first-estimates-what-needed

https://www.brookings.edu/research/a-post-american-europe-and-the-future-of-u-s-strategy/

https://www.publico.pt/2020/07/15/politica/opiniao/valores-nao-negoceiam-sao-objeto-compra-venda-1924561