Chandana Paul and Dr. Saurabh Sharma (2024) “Challenges and Strategies of National Security in 21st Century”, Journal of Validation Technology, ISSN: 1079-6630, E-I SSN: 2150-7090 UGC CARE II, 26(4), pp. 27–46. doi: 10.1080/jvtnetwork.v26i4.50.