1. National sovereignty 2. Truong Sa archipelago 3. Hoang Sa archipelago 4. Viet Nam Viet Nam has more than 3,000 coastal islands and two offshore archipelagoes, namely Hoang Sa archipelago and Truong Sa archipelago. The closest point of Hoang Sa archipelago is 120 nautical miles from the east of Quang Ngai. Meanwhile, the closest point of Truong Sa archipelago is about 250 nautical miles to the east of Cam Ranh Bay, Nha Trang city, Khanh Hoa province. These two archipelagoes are the inseparable part of Viet Nam’s territory. The State of Viet Nam has already exercised the sovereignty over the two archipelagoes for hundred of years. The sovereignty of Viet Nam over Hoang Sa and Truong Sa archipelagoes is in full accordance with international law and supported by numerous legal and historical evidences. With a view to helping the readers have a better understanding of the process of establishing and exercising Viet Nam’s sovereignty over these two archipelagoes, the National Political Publishing House publishes “Viet Nam’s Sovereignty over Hoang Sa and Truong Sa Archipelagoes.”