https://rusi.org/sites/default/files/20200221_roberts_integrated_review.pdf
https://sgp.fas.org/crs/natsec/RL33110.pdf
https://ecipe.org/wp-content/uploads/2024/11/ECI_24_PolicyBrief_22-2024_LY04.pdf
https://theconversation.com/how-can-europe-meet-the-challenge-posed-by-the-retreat-of-the-us-274687