
North Korea has said its military forces are ready to take any action necessary after a US Navy fast-attack nuclear submarine docked in a port in the South Korean city of Busan, and accused the United States of posing a grave threat to its national security.
North Korea’s state-run KCNA news agency on Tuesday quoted the country’s Ministry of Defence as saying in a statement that the presence of a US nuclear submarine on the Korean Peninsula was a “clear expression of the US invariable hysteria for confrontation”.