North Korea criticised new UN sanctions imposed over its missile tests as an "act of war" on Sunday, its first response to the latest diplomatic move to punish Pyongyang's ever-accelerating weapons drive.
Tension has been high on the peninsula as the isolated but nuclear-armed regime staged a series of atomic and intercontinental ballistic missile (ICBM) tests — most recently on November 29.
The latest launch of the Hwasong-15 ICBM, claimed to be capable of hitting all major US cities, further heightened global alarm over the rapid advance in the country's weapons technology.
"We fully reject the latest UN sanctions … as a violent breach of our republic's sovereignty and an act of war that destroys the peace and stability of the Korean peninsula and a wider region," Pyongyang's foreign ministry said in a statement carried by the state-run KCNA news agency.
Pyongyang's bellicose reply came a day after the UN Security Council unanimously passed new, US-drafted sanctions that will restrict oil supplies vital for the impoverished state.
The third raft of sanctions imposed on the North this year, initiated in response to last month's ICBM test, also received the backing of China — the North's sole major ally and economic lifeline.
The sanctions also order the repatriation of North Korean workers sent abroad to earn much-needed revenue for Kim Jong-un's regime.
The country's weapons programmes have made significant progress since Mr Kim took power in 2011.
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The North has defended its missile and nuclear weapons programmes as measures for self-defence against "hostile" US policies towards Pyongyang.
And a defiant Pyongyang said on Sunday that the country would continue its weapons push "more vigorously" to "form a balance of power with the US".
"If you think that those toothless 'sanctions' could stop the victorious march of our people who have … achieved the historic goal of building the national nuclear weapons, there would not be a bigger mistake than that," the foreign ministry said.
"The US and its puppet followers should never forget the newly-upgraded status of our nation as a nation that could pose a real nuclear threat to the US mainland," it said.
The North claimed last month that its ICBM could deliver a "super-large heavy [nuclear] warhead" to anywhere in the US mainland.
But experts believe that Pyongyang has yet to develop the advanced technology to allow its rockets to survive re-entry into the earth's atmosphere.
The latest UN sanctions were hailed by US president Donald Trump, who tweeted, "The World wants peace, not Death!"
Mr Trump and Mr Kim have traded threats of war and personal insults against each other in recent months, prompting fears of another conflict on the peninsula once devastated by the 1950 to 1953 Korean War.
The resolution bans the supply of nearly 75 per cent of refined oil products to the North, puts a cap on crude deliveries and orders all North Koreans working abroad to be sent back by the end of 2019.
It also bans sales of all industrial machinery, lorries, iron, steel and other metals to the North and added 15 Pyongyang officials to the UN sanctions blacklist for a global visa ban and assets freeze.
