North Korea, or the Democratic People’s Republic of Korea, has attracted international attention because of its ambitious nuclear weapons program. The country has carried out a series of nuclear tests that have raised tensions in Asia and around the world. The emergence of a nuclear threat from North Korea not only affects bilateral relations, but also changes regional and global dynamics. From a technological perspective, North Korea has successfully developed various types of nuclear weapons, including hydrogen bombs and intercontinental ballistic missiles (ICBMs). The latest test, carried out in 2022, adds to concerns about its capacity to attack neighboring countries such as South Korea and Japan, as well as even the United States. The launch of an ICBM by North Korea also led to increased defense in the region. South Korea and Japan have strengthened their air defense systems and are working with the US to counter potential threats. These alliances, although providing a sense of security, sometimes create further tensions and increase the risk of miscalculations that could lead to military confrontation. From an economic perspective, North Korea’s nuclear program is a priority even though the country is ranked as one of the worst countries in terms of living conditions. International sanctions imposed by the UN aim to limit North Korea’s access to technology and materials that could support its nuclear program. However, the Kim Jong-un regime remains committed to developing these weapons, indicating that politics and security are the main focus. On the global stage, the tensions generated by North Korea also influence the policies of other major countries. The US, Russia and China are engaged in complex diplomacy to prevent the conflict from escalating. China, as North Korea’s closest partner, often plays a dual role in providing economic support while calling for stability in the region. However, disagreements among major powers often prevent a lasting solution. Geopolitics in East Asia is becoming increasingly complex with the nuclear threat from North Korea. Countries in the region, such as South Korea, Japan, and Taiwan, must formulate their own defense strategies while considering the influence of all major powers. Japan’s involvement in developing stronger military capacity is a direct response to this threat. In a social context, nuclear threats trigger uncertainty among people living under the shadow of potential conflict. Protests and anti-nuclear movements often emerge in the region, demanding more constructive diplomacy and negotiations to ease tensions. The security challenges faced by Asia due to North Korea require deep attention from the international community. Holistic management and a multilateral approach remain the key to easing these tensions and preventing potential disasters.