Canadian officials have mapped out a plan for response should North Korea go ahead with an atmospheric nuclear-weapons test.

Trump tweeted that the news represented "big progress," and said he was looking forward to his upcoming summit with North Korean leader Kim Jong-Un.

North Korea hit one of its own cities when a missile test last spring went awry, researchers say.

China says it has not allowed any oil sales to North Korea that break U.N. sanctions.

North Korea's supreme leader personally decorated scientists who contributed to the development of Pyongyang's most advanced intercontinental ballistic missile, the Hwasong-15.

North Korea says it successfully tested a new, nuclear-capable intercontinental-ballistic missile that could target the entire U.S. mainland.

North Korea is to be the main topic of discussion at a summit Canada will host in the new year, Global Affairs announced Tuesday.

North Korea hasn’t launched a missile since lobbing one over Japan on Sept. 15.

North Korea is building its nuclear weapons program at a “faster-than-expected pace” and may announce its completion within the next year, according to South Korea’s unification minister.

Satellite images suggest “significant” activity at North Korea’s mountainous nuclear test, in an area where little movement has been observed in several months, according to a U.S.-based watchdog.