Kathmandu, Jan 21: Chief of Army Staff (CoAS) Ashok Raj Sigdel has said that current international and regional security situation has turned to be multi-dimensional, complex and challenging.He noted that national security is increasingly challenged due to the weak and interest-centered alliances of multilateral institutions, extensive use and misuse of information technology, and the declining decision-making capacity of small nations.At the seminar 'The Role of the Defence University in Nepal's National Security, National Unity and Prosperity' organized by the Infrastructure Development Committee of the National Defence University, Nepal Army Chief Sigdel stressed the need for a shared understanding and perception...