"Japan's chief cabinet secretary, Yoshihide Suga, called the North's comments extremely provocative and outrageous" and said that if "North Korea stays the course that it is on, it will increasingly become isolated".
Treasury Secretary Steve Munchin suggested on Wednesday that the USA is willing to cut off trade "with anyone who trades with North Korea".
A Gallup Korea poll conducted after the September 3 test found 60 per cent of respondents supported nuclear weapons for the south. Russian President Vladimir Putin questioned the usefulness of sanctions against the Pyongyang regime last week, saying that North Korea would rather eat grass than yield to outside pressure.
The United Nations imposed new sanctions on North Korea Monday, calling for the denuclearization of the Korean Peninsula, a daunting task given North Korea's unwillingness to part with its nuclear weapons.
New satellite images suggest that North Korea has resumed working at the secretive state's mountainous nuclear test site, despite new United Nations sanctions, according to a USA -based watchdog.
"Japan is no longer needed to exist near us", a statement carried by North Korea's state media organisation, the Korean Central News Agency (KNCA), said.
Turkey will take its own security measures after Russian Federation defense deal: Erdogan
It has a 400 kilometre-range and can work with four different types of missiles with different starting weight and launch ranges. An anti-ballistic missile using "hit-to-kill" kinetic velocity to destroy incoming ballistic missiles is now under development.
SEOUL - North Korea has resumed work at its underground nuclear testing site, defense analysts said, as the country vowed to keep expanding its nuclear arsenal despite the latest United Nations sanctions. Sanctions were watered down due to objections from China, by far North Korea's largest trading partner, and Russian Federation. She added that the images from the North's nuclear test in 2016 did not show substantial change on the mountain's surface.
"I'd like to appeal to the world, together with Prime Minister Modi, that we need to have North Korea change its policy through the thorough implementation of the newly adopted Security Council resolution by the worldwide community".
Prime Minister Narendra Modi and his Japanese counterpart Shinzo Abe also affirmed their commitment to total elimination of nuclear weapons.
"However the global community will never accept a nuclear North Korea and in particular my country will never accept a nuclear North Korea", he said. Significantly, it stopped short of imposing a full embargo on oil exports to North Korea, most of which come from China.
Chinese Foreign Ministry spokeswoman Hua Chunying said the worldwide community had reached a "high consensus" on trying to realise a peaceful solution.
North Korea responded to the "vicious" sanctions by vowing to inflict "the greatest pain" the USA has ever suffered.