North Korea fired \”multiple unidentified ballistic missiles\” on Monday, South Korea’s military said. The move came on the same day Seoul and Washington began a major annual joint military drill known as Freedom Shield. The nuclear-armed North slammed the drills as a \”provocative act\”, warning of the danger of sparking war with \”an accidental single shot\” The exercise will run until March 20, and will involve \”live, virtual, and field-based training\”, according to a US statement. It comes after two South Korean Air Force fighter jets accidentally dropped eight bombs on a village during a joint training exercise with US forces on March 6. Some 31 people, including civilians and military personnel, were wounded in that incident, South Korean’s military says. The two Koreas remain technically at war since their 1950-1953 conflict ended in an armistice, not a peace treaty, and relations between Pyongyang and Seoul have been at one of their lowest points in years. The United States stations tens of thousands of US soldiers in South Korea, and the allies regularly stage joint drills, which they describe as defensive in nature.