Chowdhury Ashik Mahmud Bin Harun, Executive Chairman, Bangladesh Investment Development Authority (BIDA) and the Bangladesh Economic Zones Authority (BEZA), delivered a lecture on Economic Security as a Pillar of National Security: Investment Opportunities and Challenges for Bangladesh to the course members of National Defence Course- 2025 on Thursday, 30 October 2025. He also called on Lieutenant General Mohammad Shaheenul Haque, OSP, BSP, ndc, hdmc, psc, Commandant, National Defence College (NDC), Bangladesh.