North Korea is considering stopping the denuclearization talks with the United States, according to Russian news agency Tass.

"We do not have any intention of giving up in any form to the demands of the United States," said Cho Sun-hee, a North Korean Foreign Ministry spokesman, in a press conference in Pyongyang.

He said Kim Jong-un, chairman of the State Council, will announce an official statement on North Korea's future action plan after the second North-South summit in Hanoi.