|A view of a test launch of a new solid-fuel intercontinental ballistic missile (ICBM) Hwasong-18 in a video released by North Korea's Korean Central News Agency (KCNA) April 14, 2023. (KCNA via REUTERS)
The three nations agreed at talks in Washington on Friday to hold regular missile defence and anti-submarine exercises in their efforts to boost diplomatic and military co-operation.
North Korea tested a new solid-fuel intercontinental ballistic missile on Friday that experts say would ease the way for missile launches with little warning.
Monday's drills focus on mastering response procedures, from detection and tracking to information sharing, by creating a virtual target in a scenario featuring a North Korean ballistic missile provocation, the South's navy said.