Tkachenko, V., Chornenkyi, O., НatsenkoS. and Mordvinof, S. 2024. Justification of the approach to the optimal selection of performance indicators of the defense sector of Ukraine. Social development & security. 14, 5 (Oct. 2024), 58-74. DOI:https://doi.org/10.33445/sds.2024.14.5.6.