What N. Korea Warns It Has in Store for US over Anti-Missile System

North Korea is making threats over U.S. plans to station a missile defense system in South Korea.

Monday's threats come three days after South Korea and the U.S. announced they were close to determining a location in South Korea to place a Terminal High-Altitude Area Defense (THAAD) to protect against North Korean missile threats. 

North Korea state media aired a statement saying it will take physical measures over the plans.

"There will be physical response measures from us as soon as the location and time that the invasionary tool for U.S. world supremacy, THAAD, will be brought into South Korea are confirmed," the North's military said in a statement early on Monday.

"It is the unwavering will of our army to deal a ruthless retaliatory strike and turn (the South) into a sea of fire and a pile of ashes the moment we have an order to carry it out," the statement, carried by the Korean Central News Agency, said.

North Korea says it plans to end a U.N. communication channel with the United States as punishment for the protective measure. 

"As the United States will not accept our demand for the immediate withdrawal of the sanctions measure, we will be taking corresponding actions in steps," the North's military warned. "As the first step, we have notified that the New York contact channel that has been the only existing channel of contact will be completely severed."

State media also hinted at harsher treatment of Americans still imprisoned inside the country.

Although South Korea says the system is not intended to target any country, North Korea interprets any negative action against North Korea supreme leader Kim Jong Un as an act of war. 

Kim is notorious for his alleged human rights abuses and for constantly threatening the total extermination of the United States and South Korea.