The United States nuclear submarine arrived in South Korea to strengthen naval exchanges and cooperation between the two countries, Yonhap reported, citing Seoul's Defense Ministry. The Virginia-class nuclear-powered submarine USS Missouri ( SSN-780 ) arrived at a key naval base in Busan, 320 kilometers southeast of Seoul. According to the report, the submarine arrived amid concerns that North Korea may launch an intercontinental ballistic missile this month.Earlier, the US warned North Korea that any nuclear attack against the country or any of the allies will face a "swift, overwhelming, and decisive response." https://krakenfiles.com/view/tZFFmgOfIk/file.html