The situation in North Korea in 2021 has two differences and one continuation from 2020. The first difference is that the President of the United States is replaced with Joe Biden. Trump’s presidency has made no real contribution to North Korea’s abolition of nuclear weapons development, except for three meetings with North Korean leader Kim Jong-un. Moreover, when Biden took office, North Korea gradually increased tensions with U.S. diplomacy in the first half of 2021, as a review of North Korea’s policy had yet to be released. The second difference is that the floods in 2021 will cause a crisis in food production in North Korea, resulting in a wave of flights from North Korea. A continuation refers to the novel coronavirus pneumonia (COVID-19). It has been rampant since 2019 and is not expected to subside significantly by 2021. In order to prevent COVID-19 from entering North Korea, North Korea has closed its borders and conducted a self-imposed blockade that is more thorough than the United Nations economic sanctions.