Why did you choose your proposed course and institution*? National Security Policy has been a great interest I have been acquainted since I studied at Tallinn University of Technology, Estonia, under the scholarship of ERASMUS MUNDUS AREAS+ program. Under the threaten of super power in her neighboring country, Estonia has been extremely cautious about their national security, especially to contain the invasion. Cambodia, not different from Estonia, is in the middle of the most strategic geolocation of Southeast Asia and the Pacific, which used to be a bloody battle field between the capitalist led by the US and its allies and the socialist led by the Soviet Union and China. As the struggle to influence in international politics has been arisen, the confrontation and impacts to the national security of the kingdom is greatly a contagious aspect that must be addressed properly with wise visionary policymakers. How will the proposed study contribute to your career*? How have you contributed to solving a challenge and to implementing change or reform? (Be specific and include: what aspect/s of your leadership knowledge, skills and practice you consider to be well established and effective; which people or organisations you worked with to solve the problem; and what creative methods were used.)*: Please:- a) give up to three practical examples of how you intend to use the knowledge, skills and connections you will gain from your scholarship. Possible tasks can be personal and/or professional; and b) list any possible constraints you think may prevent you from achieving these tasks. *: