North Korea’s threatening with nuclear weapon has been a huge issue, but it seems like everyone does not know much about the issue. So I wanted write about some details about North Korea’s nuclear weapon. The North Korean government got their first nuclear facility built in 1965 with supports from Soviet Union’s engineers. The Soviet Union and China stopped supporting North Korea since 1990’s. Since 1990’s, North Korea have been developing their nuclear weapon with limited resources and supports. It has surprised other countries, because they have got very far with what they have. After the Korean war, which has stopped 1953, the United States have sent 28,500 military troops to South Korea to prevent North Korea’s unpredictable invasion. However, North Korea saw this action as a threat to them, so they began to make more nuclear weapons. It is understandable why North Korea is willing to make nuclear weapon even though the world doesn’t want them to make the nuclear weapon. I know that what they are doing right now is not right such as threatening other countries with nuclear bomb, but I believe that what they are doing right now is not completely wrong; what i meant is making nuclear bomb not threatening other countries.