Angered by U.N. Security Council sanctions over its nuclear test, North Korea threatens for the first time to launch a pre-emptive nuclear strike against the United States and South Korea.
It's one of a series of threat that begins with Pyongyang threatening to scrap the 1953 truce that effectively ended the Korean War. At the same time, it cuts off its direct phone links with South Korea at Panmunjom, the abandoned village that sits on the border between the two countries.
On March 8, North Korea doubles down on the threat, saying it is nullifying the joint declaration on the denuclearization of the Korean Peninsula. One of the country's top generals, according to published reports, claims Pyongyang has nuclear-tipped intercontinental ballistic missiles that are ready to be fired.
In a sign of crumbling relations, North Korea refuses to answer its hotline with South Korea, South Korea's unification ministry said Monday, according to the Yonhap news agency.
Rodong Sinmun, the official newspaper of North Korea's ruling Workers' Party, reports Monday that North Korea's army has declared invalid the 1953 armistice agreement that ended the Korean War. With the declaration, Pyongyang makes good on its threat to nullify the armistice.