Indonesia has been facing a very high urbanization that makes capacity of Jakarta can no be longer supporting all activities as capital city and also business hub. This condition made The President of Indonesia, Joko Widodo decided to relocate capital to Kutai Kartanegara (Kukar) and Penajam Paser Utara (PPU) Regency in East Borneo to support more sustainable capital for national government action. Moeldoko as a Chief of Presidential Staff also mentioned that this capital need to be protected by a strong three defense forces dimension which are land, sea, and air. So, is it safe for capital to be move to Borneo as a research question. To analyze it, the researcher viewed this case from the defense geography perspectives. The researcher will use literature study approach from various sources. The result of this research will explain that Kukar and PPU Regency is safe or not to be the new capital of Indonesia. This research, therefore, has opened a new scientific discussion among researchers, defense and planner practitioners to formulate the capital city of Indonesia that safe to settle in.

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