http://uk.reuters.com/article/uk-eu-defence-juncker-idUKKBN1900V4
https://www.swp-berlin.org/en/publication/frankreichs-atomwaffen-und-europa
https://www.brookings.edu/blog/order-from-chaos/2020/03/23/as-us-russian-arms-control-faces-expiration-sides-face-tough-choices/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=85144056
https://www.iai.it/sites/default/files/iaip1924.pdf