id	domain	url
ijois-649	www.cbo.gov	https://www.cbo.gov/system/files/2019-01/54914nuclearforces.pdf
ijois-649	www.cbo.gov	https://www.cbo.gov/system/files/2019-08/55500-cbo2020
ijois-649	doi.org	https://doi.org/10.1080/19445571.2016.1375308
ijois-649	doi.org	https://doi.org/10.1080/13523260.2016.1257214
ijois-649	archive.org	https://archive.org/details/sampson_option/page/n235/mode/2up
ijois-649	muse.jhu.edu	https://muse.jhu.edu/article/446776/pdf
ijois-649	www.tandfonline.com	https://www.tandfonline.com/doi/pdf/10.1080/00963402.2019.1606503?needacc
ijois-649	www.acamedia.info	http://www.acamedia.info/politics/escalation/references/kristensen_us_first_strike
ijois-649	doi.org	https://doi.org/10.1177/0096340215571913
ijois-649	doi.org	https://doi.org/10.1177/0022343315626770
ijois-649	www.jstor.org	https://www.jstor.org/stable/pdf/26270573.pdf?refreqid=excelsior%3abbaaaa78ff
ijois-649	www.jstor.org	https://www.jstor.org/stable/2538971?seq=1#metadata_info_tab_contents