North Korea has declared a "state of war" against South Korea and warned that any provocation would swiftly escalate into a nuclear conflict.
"From this time on, the North-South relations will be entering the state of war and all issues raised between the North and the South will be handled accordingly," North Korea's Korean Central News Agency (KCNA) announced on Saturday.
It said it was the agreement between the government of North Korea, its ruling party and other organizations.
North Korea previously warned of an attack to South Korea and America, because of the routine drills and declaration of the highest military alert for condemning nuclear test.
It is believed the North Korean government will next declare a full-out war against South Korea.