Putri and Lathifatuddini/Jurnal Pertahanan Vol. 7 No. 3 (2021) pp. 452-461 452 Jurnal Pertahanan Media Informasi tentang Kajian dan Strategi Pertahanan yang Mengedepankan Identity, Nationalism dan Integrity e-ISSN: 2549-9459 http://jurnal.idu.ac.id/index.php/DefenseJournal SOCIALIZATION STRATEGY TO INSTILL NATIONALISM IN 3T (FRONTIER, LEAST DEVELOPED, OUTERMOST) REGIONS TO COUNTER THE NATIONAL DEFENSE THREATS Hariswati Rachmadani Putri Indonesia Defense University IPSC Area, Sentul, Sukahati, Citeureup, Bogor, West Java, Indonesia 16810 rachmadaniputri@ymail.com Lathifatuddini STIT Darussalam Lhokseumawe Sultan Iskandar Muda Street, Number 24F, Lhokseumawe, Aceh, Indonesia 24351 lathifatuddini@gmail.com Article Info Article history: Received : November 6, 2021 Revised : November 26, 2021 Accepted : December 27, 2021 Keywords: 3T Regions, Instill Nationalism, National Defense System, National Defense Threat, Socialization Strategy DOI: http://dx.doi.org/10.33172/jp.v7i3 .1455 Abstract The 3T region (terdepan, tertinggal, terluar or frontier, least developed, outermost) in Indonesia is an area that is prone to non-military threats, especially ideological threats that can affect national defense. Various efforts have been made by the government but the level of success achieved is still minimal. In this case, the state needs to seriously develop steps to socialize the attitude of nationalism, especially to people in the 3T region. The purpose of this study was to explore the appropriate socialization strategy used in inculcating the attitude of nationalism in the 3T society regions. This study used qualitative methods with data collection through library research and analytical methods using descriptive analysis. The results of this study are expected to find the right socialization strategy that should be applied in the 3T region in the future. The success in efforts to socialize the planting of nationalism in the 3T region by the government depends on many factors, and the involvement of the central government and regional parties, as well as all levels of society, is an important aspect in determining the success of these efforts. © 2021 Published by Indonesia Defense University INTRODUCTION Indonesia is the largest archipelagic country in the world. Indonesia has more than 17,000 islands (Antara News, 2021). Based on data released by the Department of Population and Civil Registry of the Ministry of Home Affairs, the total population of Indonesia in June 2021 is 272,229,372 people (Direktorat Jenderal Kependudukan dan Pencatatan Sipil, 2021). Indonesia's strategic location borders with other Southeast Asia countries, such as Singapura, Malaysia, Thailand, Vietnam, Filipina, Timor Leste dan Papua Niugini (Badan Geologi Kementerian Energi dan Sumber Daya Mineral, n.d.). Some of the