Washington: US President Joe Biden has received a warning from North Korea. North Korean chief Kim Jong-un and his sister Kim Yo Jong have warned that the United States should not do anything that would make it asleep. In particular, Biden administration officials have arrived in Tokyo and Seoul. Kim Yo is also a principal adviser to her brother. It has been revealed that North Korea has criticized the U.S. and South Korean military exercises for the first time invading Biden's administration. Kim Yo has warned the US not to act on provocation if "He has to sleep comfortably at night for the next 4 years." U.S. Secretary of State Antony Blinken and Defense Minister Lloyd Austin have gone to Asia to talk to Japan and South Korea on North Korea and other regional issues after Kim Yo Jong released the statement on Tuesday. The two ministers are to hold talks in Tokyo on Tuesday and will meet officers in Seoul the next day. Kim Yo Jong, who handles North Korea's inter-Korean case, said North Korea would consider coming out of a 2018 bilateral agreement to ease military tensions if it did not cooperate with South Korea, and also dissolved a decade-old ruling party unit set up to handle inter-Korean relations. Also Read: UPSC Releases Reserve List Of Candidates on CMS Exam 2019 CBSE Board encourage Artificial Curriculum for Students From working at a call centre to winning in International bodybuilding Expo, the inspiring tale of Vegetarian bodybuilder Rakesh Wadhwa