Indonesia has small and outermost islands, is not an easy thing to protect these islands. The case of rights to ownership of the islands of Sipadan and Ligitan which fell into the hands of Malaysia in 2002 based on the decision of the International Court of Justice is one of the impacts to the ineffective supervision of small islands in Indonesia. Cases regarding maritime boundaries, state ownership, and sentiments of nationalism are one of the problems that occur in border areas. Therefore, Indonesia must take concrete actions in the management of small and outer islands based on the law of the sea convention which functions as a baseline in determining the boundaries of the sea area. This study uses a qualitative method, namely to study events and is used in research. The aim is to analyze the defense program in the Jokowi administration era. By using primary data and secondary data, the author again tries to explore how to focus on defense in Indonesia's maritime sector as a developing country that has a priority in the defense sector. The results of the study show that Indonesia during the Jokowi administration used an active defensive-based defense strategy, prioritizing related efforts related to territorial disputes in the outermost small islands without aggressive action. The defense policy made and enforced by the Jokowi government through various efforts cannot be separated from the 1982 UNCLOS