North Korean dictator Kim Jong-un has accused Donald Trump of 'bluffing' over threats to take military action against the reclusive nation.

US President Trump called an emergency July 4 meeting to formulate a 'measured response' to the North's first intercontinental ballistic missile test, amid fears it could reach as far as Alaska.

Kim's spokespeople said the despotic leader was 'unfazed' over Trump's threats and branded the military drills the US military is currently undergoing in Australia as a 'show of force'.

'The US is crying out for mounting a military attack on the DPRK,' they told state-censored newspaper Rodong Sinmun, adding the missile test was an act of 'self defence'.

North Korean dictator Kim Jong-un has accused Donald Trump of 'bluffing' over threats to take military action against him

Kim's spokespeople said the despotic leader was 'unfazed' over Trump's threats and branded the military drills the US military is currently undergoing in Australia as a 'show of force'

They went on: 'This is just a ridiculous bluffing of those taken aback by the invincible might of the DPRK... The DPRK remains unfazed by the desperate moves of the US to stifle it.'

The US is currently undergoing a military exercise with Australia in north Queensland, in what is the largest joint exercise by the Australian Defence Force and the American military.

'It is a manifestation of stupidity that the US works hard to check the victorious advance of the service personnel and people of the DPRK,' Kim's henchmen said of the drills.

'The US is gravely mistaken if it arrogantly thinks that even a single shell should never be dropped on its mainland while carpet-bombing other countries.'

Trump spoke out against North Korea after Kim declared the country had finally achieved its dream of building a rocket that would 'fundamentally put an end to the US nuclear war threat and blackmail'.

US Secretary of State Rex Tillerson later confirmed the latest missile test was with an intercontinental ballistic missile.

Trump spoke out against North Korea after Kim declared the country had finally achieved its dream of building a rocket that would 'fundamentally put an end to the US nuclear war threat and blackmail'

The missile launch, which came as the United States prepared to mark its Independence Day, triggered a Twitter outburst from Trump who urged China to 'put a heavy move' on North Korea

And Tillerson says that's a new escalation of the threat posed to the United States and the world by North Korea.

The launch, which came as the United States prepared to mark its Independence Day, triggered a Twitter outburst from Trump who urged China to 'put a heavy move' on North Korea to 'end this nonsense once and for all'.

The US has requested a closed-door meeting of the United Nations Security Council on North Korea's latest missile launch, a spokesman for the US mission to the United Nations says.

Potential responses included sending additional troops to the region and possibly more sanctions.

North Korea has long sought to build a rocket capable of delivering an atomic warhead to the United States - something Trump has vowed 'won't happen'.

SOUTH KOREA OFFERS TALKS WITH NORTH TO EASE TENSION South Korea has offered to talk with North Korea to ease animosities along their tense border and resume reunions of families separated by their war in the 1950s. It is unclear if North Korea would agree to the proposed talks as it remains suspicious of the South Korean president's overtures, seeing the new leader's more liberal policy as still resorting to the United States to force North Korea to disarm. Seoul's proposal for two sets of talks indicates President Moon Jae-in is pushing to improve ties with Pyongyang despite the North's first intercontinental ballistic missile this month. South Korea has offered to talk with North Korea to ease animosities along their tense border (South Korean president Moon Jae-in pictured with former US leader Barack Obama) Vice defence minister Suh Choo Suk said the South's defence officials are proposing talks at the border village of Panmunjom on Friday to discuss how to end hostile activities along the border. Seoul's acting Red Cross chief Kim Sun Hyang said it wants separate talks at the border village on August 1 to discuss family reunions. North Korea's state media has not immediately responded to South Korea's overtures. Earlier this month, Mr Moon reiterated he is willing to meet North Korean leader Kim Jong Un if conditions are met. Mr Moon also said the two Koreas must halt hostile activities along the border, restart family reunions and cooperate on the 2018 Winter Olympics to be held in Pyeongchang, South Korea. Mr Moon has said he would use both dialogues and pressures to resolve the standoff over North Korea's nuclear programme. But his push has reported little progress with the North test-firing a series of newly developed missiles since Mr Moon's May 10 inauguration. North Korea's state media has not immediately responded to South Korea's overtures (South Korean president Moon Jae-in pictured with current US leader Donald Trump and wife Melania) The North's ICBM (intercontinental ballistic missile) launch has stoked security worries as it showed the country could eventually perfect a reliable nuclear missile capable of reaching anywhere in the United States. Analysts say the ICBM that was tested could reach Alaska. After the launch, Mr Kim said he would never negotiate his weapons programmes unless the United States abandons its hostile policy toward his country. Mr Kim's statement suggested he will order more missile and nuclear tests until North Korea develops a functioning ICBM that can place the entire US within its striking distance. Advertisement

In an announcement of the missile test, North Korean officials called the launch, which leader Kim Jong-un supervised, a 'glistening miracle'.

The Hwasong-14 ICBM reached an altitude of about 1,741 miles (2,802 kilometres) and flew 579 miles (933 kilometres) for 39 minutes before hitting a target area on the sea off the east coast, according to North Korea.

Washington, Japan and South Korea gave similar figures, and US experts said the trajectory implied the device could reach Alaska.