'Nuclear war may break out any moment' - North Korea

North Korea, United States
North Korea's deputy ambassador to the United Nations issued the warning on Monday. Photo credit: Newshub

North Korea has sent another worrying warning to the world saying that nuclear war could "break out any moment" as tensions rise between the rogue state and the United States.

The warning came from North Korea's deputy ambassador to the United Nations, Kim In Ryong, who said North Korea is now a "full-fledged nuclear power which possesses the delivery means of various ranges".

"As long as one does not take part in the US military actions against the DPRK, we have no intention to use or threaten to use nuclear weapons against any other country."

However he did warn that the US mainland was within missile firing range, according to reports.

It comes as joint naval drills began off the Korean Peninsula between South Korea and US forces following North Korea's continued threats to fire missiles toward the US territory of Guam.

Over the weekend, US Secretary of State Rex Tillerson said that if diplomatic efforts fail between the Governments of North Korea and the United States, then the "military option will be the only one left."