Since the 2018 Winter Olympics in PyeongChang, the security situation on the Korean peninsula has been changing rapidly. North Korea and the US-North Korea summit, and the expectation that the denuclearization of the Korean peninsula could be realized, is putting a mood of thawing. North Korean leader Kim Jong Eun pointed out that there is no reason to possess nuclear weapons if military threats are resolved and North Korea's system security is guaranteed, and proposed a summit for inter-Korean summit. but, three summit talks and six summit talks with North Korea in Singapore have been conducted to date, but they have failed to find clear results and consensus in the denuclearization of the Korean peninsula. It is a historical thing that the two Koreas, who have been hostile to each other for 70 years, have had three summits only in one year. Nevertheless, the 9.19 Pyongyang Joint Declaration has reaffirmed the "road to denuclearization". At present, it is difficult to predict the future of the North Korean nuclear issue, and it is expected that it will take much effort and time until the complete denuclearization is achieved. In this article, we will try to objectively examine whether North Korea can easily give up its nuclear weapons and the sword and sword that it has accomplished for decades. To do this, we first examine the necessity of denuclearization of the Korean peninsula, the hidden intentions and strategies of North Korea, and anticipate the process of achieving denuclearization. In addition, we will identify the issues to be solved until the denuclearization of the Korean peninsula is realized from the perspective of political security and suggest future directions.