North Korea military threatens physical response against U.S. THAAD deployment

Otto Frederick Warmbier (C), a University of Virginia student who was detained in North Korea since early January, is taken to North Korea's top court in Pyongyang, North Korea, in this photo released by Kyodo March 16, 2016. Mandatory credit REUTERS/Kyodo Mandatory credit REUTERS/Kyodo/File Photo

SEOUL (Reuters) - North Korea said on Monday it had told the United States it will cut the only channel of communication between them, at the United Nations in New York, after Washington blacklisted leader Kim Jong Un last week for human rights abuses.

All matters related to the United States, including the handling of U.S. citizens detained by Pyongyang, will be conducted under its "wartime law," its official KCNA news agency said.