North Korea has declared it is 'ready for war'
A statement issued by the hermit state said Kim Jong-un had the “will and capability” to both defend his country and launch attacks.
The warning also poked fun at US President Donald Trump, who was described in the statement as a converted businessman.
It comes amid heightening tensions between Pyongyang and its enemies in Washington, Seoul and Japan.
The fiery statement, read on state-run TV in North Korea, said: “We have the will and capability to fully respond to any war which the US wants.
“If the businessmen-turned-US authorities thought they would frighten us they would soon recognise that their methods would not work.
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A giant mosaic created by 10,000 North Koreans holding cards at the May Day stadium in Pyongyang, North Korea.
“The world will soon see how significant the huge victory we made form our recent test of a large scale rocket engine was.”
The warning comes just a week after Kim promised to unleash a “merciless” attack on America if joint military exercises with South Korea continue.
Kim Jong-un said he would attack his Western enemies from “ground, air, sea and underwater” in a sabre-rattling statement released through state media.
Kim Jong-un watching a North Korean missile launch
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A statement attributed to Kim said: “If they infringe on the DPRK's sovereignty and dignity even a bit, its army will launch merciless ultra-precision strikes from ground, air, sea and underwater.
“On March 11 alone, many enemy carrier-based aircraft flew along a course near territorial air and waters of the DPRK to stage drills of dropping bombs and making surprise attacks on the ground targets of its army.”
Earlier this month, North Korea fired four ballistic missiles into the sea off Japan in response to annual US-South Korea military drills, which the North sees as preparation for war.
The tests sparked condemnation from across the globe and a promise from America to toughen their stance on North Korea.
Kim Jong-un said he had a 'capability' to destroy his enemies
Before being elected Mr Trump said he would succeed in preventing Kim from acquiring nuclear missiles.
He said: "It's something I've been talking about for a long time. You have this madman over there who probably would use [nuclear weapons]… and nobody talks to him, other than, of course, Dennis Rodman. That's about it.
North Korea has become increasingly aggressive under the rule of Kim Jong-un
“I’ll speak to anybody. There's a 10 per cent or 20 per cent chance I could talk him out of having his damn nukes – because who the hell wants him to have nukes?"
READ MORE: What will Donald Trump do about North Korea?