A confidential United Nations (UN) report purportedly says several countries believe that North Korea may have developed “miniaturized nuclear devices to fit into the warheads of its ballistic missiles.”

Russia says the United States is taking a “destructive” stance over a decades-old multilateral treaty that bans all nuclear explosions by saying openly that it does not plan to ratify it.

A senior Pentagon official says the US could carry out a live nuclear test within “months” if President Donald Trump orders it.

The US administration’s decision to conduct a nuclear test and Washington’s unilateral withdrawal from international treaties suggest that a new Cold War has resumed, says an American political commentator.

South Korean President Moon Jae-in says he is making efforts to arrange a visit by North Korea’s leader Kim Jong-un to Seoul, citing a “desperate need” for both sides to improve relations.

A US aircraft conducts a reconnaissance flight over the Korean Peninsula, an aviation tracker says, as North Korea ends a unilateral halt to its missile testing.

North Korea warns the US over human rights accusations, saying Washington’s “verbal abuse” would only aggravate tensions in the Korean Peninsula.

North Korea says it has conducted another crucial test to strengthen its "strategic nuclear deterrent.”

North Korea says it may resume nuclear missile tests as there is a limit to its patience with the United States.

Russia dismisses a claim by the United States that Moscow may be conducting nuclear tests in violation of the Comprehensive Nuclear-Test-Ban Treaty (CTBT).