Ambassador Nikki Haley warned North Korea's dictator Kim Jong-Un on Monday that he is 'begging for war' with 'abusive use of missiles.'

'Enough is enough!' America's representative at the UN said during an emergency Security Council meeting.

'We have kicked the can down the road long enough,' she said of the North Korea nuclear threat. 'There is no more road left.'

'The time for half measures in the security council is over. The time has come to exhaust all of our diplomatic means before it is too late. We must now adopt the strongest possible measures. Kim Jong-Un’s action cannot be seen as defensive.'

'War is never something the United States wants. We don't want it now,' Haley said.

'But our country's patience is not unlimited,' she warned Kim's regime. 'We will defend our allies and our territory.'

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U.S. Ambassador to the United Nations Nikki Haley spoke forcefully during an emergency meeting of the UN Security Council on Monday as world leaders wrestled with responses to North Korea's latest atomic bomb test

North Korean dictator Kim Jong-Un is shown with a nuclear warhead in an undated photo issued by his government

United Nations Ambassadors Koro Bessho of Japan, left, Matthew John Rycroft of the UK, center, and Nikki Haley of the U.S. conferred in an animated conversation on Monday

Haley asked the United Nations to adopt the strongest possible sanctions against the rogue communist nation.

The U.S. plans to circulate a new Security Council resolution on North Korea this week and wants a vote next week.

In a more immediate response to North Korea's nuclear saber-rattling, the Trump White House told South Korea it was waiving a 2012 agreement that imposed a weight limit on Seoul's missiles.

Under the existing missile pact between the U.S. and South Korea, the nation's warheads can't be heavier than 500 kg, about 1,100 pounds.

An unlimited warhead weight allowance would enable the South to strike North Korea with greater force in the event of a military conflict.

Monday's hastily assembled Security Council meeting was called in response to North Korea's most powerful nuclear test – as the Trump administration warned any threat to the US or its allies would trigger a 'massive military response.'

Haley spoke with South Korean Ambassador to the UN Cho Tae-yul before Monday's UN Security Council emergency meeting

The meeting, convened at the request of the UK, U.S., Japan, France and South Korea, came after Kim Jong-Un's totalitarian regime carried out its sixth test of a nuclear device.

Defense Secretary James Mattis briefed President Donald Trump about the military options available if the crisis escalated, adding that Washington was capable of launching an 'effective and overwhelming' response.

While the US was 'not looking to the total annihilation' of North Korea there were 'many options to do so', he said Sunday.

But in the UK Foreign Secretary Boris Johnson cautioned against a military strike, because North Korea already had the ability to 'vaporize' large parts of the population of South Korea even without nuclear weapons.

Haley spoke with Chinese Ambassador to the UN Liu Jieyi before Monday's Security Council meeting. China is North Korea's largest trading partner

Prime Minister Theresa May said Pyongyang's actions posed an 'unacceptable further threat to the international community' and urged world leaders to increase pressure on the regime.

The test blast came after propaganda pictures were published of Kim examining what was said to be a nuclear warhead being fitted on to the nose of an intercontinental ballistic missile.

Mrs May reiterated the call for 'tougher action, including increasing the pace of implementation of existing sanctions and looking urgently in the UN Security Council at new measures' she had made alongside Japanese Prime Minister Shinzo Abe during her visit last week.

She said: 'This is now even more pressing. The international community has universally condemned this test and must come together to continue to increase the pressure on North Korea's leaders to stop their destabilizing actions.'

Defense Secretary James Mattis said Sunday that the US is 'not looking to the total annihilation' of North Korea but there are 'many options to do so'

The Foreign Secretary played down the prospect of military action although he acknowledged all options remained on the table.

Johnson said: 'There is no question that this is another provocation, it is reckless, what they are doing is, they seem to be moving closer towards a hydrogen bomb which, if fitted to a successful missile, would unquestionably present a new order of threat.'

Arguing for a diplomatic solution he said: 'It's certainly our view that none of the military options are good. It is of course right to say that all options are on the table, but we really don't see an easy military solution.'

Haley announced on Sunday that she, along with UN representatives from the UK, France, Japan and South Korea, had demanded Monday's emergency session

A North Korean missle is paraded on North Korean state TV in this undated image

The UN Security Council is comprised of permanent members China, France, Russia, UK and the U.S., and ten rotating member countries that serve 2-year terms

The Chinese government 'expressed firm opposition and strong condemnation' and urged North Korea to 'stop taking erroneous actions that deteriorate the situation.'

But Johnson urged Beijing to go further in putting economic pressure on its neighbor.

He said: 'Our message to the Chinese is, and we are working ever more closely with them, we think there is more scope for you, the Chinese, to put economic pressure on the North Koreans.

'It has worked, we have seen signs in the last six months of Chinese pressure actually changing the approach of North Koreans – let's see if we can do it again.'