Okpaleke, Francis N, and Al Chukwuma Okoli. “THE STRATEGIC EFFICACY OF DRONES FOR US GRAND STRATEGY”. AUSTRAL: Brazilian Journal of Strategy & International Relations 9, no. 18 (November 11, 2022). Accessed December 6, 2022. https://seer.ufrgs.br/index.php/austral/article/view/103781.