https://thehill.com/opinion/4244449-a-new-american-strategy-for-ukraine/
https://www.ceps.eu/wp-content/uploads/2013/02/1304.pdf
https://www.jstor.org/stable/pdf/resrep47386.pdf?refreqid=excelsior%3A52df592e24231e44d33302bbc1dca659&ab_segments=&origin=&initiator=&acceptTC=1
https://www.sipri.org/sites/default/files/European-Union-weapons-mass-destruction.pdf