Kim justified the suspension to his party by saying that the situation around North Korea has been rapidly changing "in favor of the Korean revolution'' since he announced last year his country had completed its nuclear forces.
In November, North Korean leader Kim Jong-Un said that his country had achieved full nuclear statehood after what he said was the successful test of a new missile capable of striking anywhere in the United States.
Late last month, nuclear-armed North Korea launched an intercontinental ballistic missile which travelled about 1,000 km before splashing down in the Sea of Japan, within Japan's exclusive economic zone.
"This is a regime that's never met a weapon that it hasn't proliferated. It's a regime who's said clearly its intentions are to use that weapon for nuclear blackmail and then to quote, "reunify" the peninsula under the red banner," McMaster said.
In retort to Donald Trump North Korea said his warnings, "can never frighten us or put a stop to our advance", but rather "pushes us to speed up the efforts to accomplish the great cause of completing the state nuclear force".