When the Natsir Cabinet took over the responsibility of the Indonesian government, domestic security problems had not yet fully recovered. Many armed groups are scattered throughout Indonesia. They possessed weapons legally because they seized them from the Japanese and Dutch colonial forces who were then used to fight to defend Indonesian independence. There are followers of S. M. Kartosuwiryo who called himself DI / TII in West Java, there was a communist group called "Merapi-Merbabu Complex" (MMC) In Central Java, there were Kahar Muzakar followers in South Sulawesi and "Laskar Hari Liar" in North Sumatra. As long as the weapons still available to them have not been put in order, the domestic security is not guaranteed.