Japan is planning for a mass evacuation of nearly 60,000 Japanese citizens amid rising tensions in the South Korean peninsula.
Kim Jong-un fired another powerful missile of the weekend which has shocked the international community.
Reports suggest that the North is preparing a new missile test launch.
The US envoy Nikki Haley told an emergency meeting of the Security Council in New York that the US did not want war but that its patience is “limited”.
She said: “War is never something the United States wants.
“We don’t want it now but our country’s patience is not unlimited.”
Ms Haley also said that the Hermit state was “begging for war” and that only the strongest sanctions would enable the problem to be resolved through diplomacy.
Swiss President Doris Leuthard pointed to her country’s long record of neutral and discreet diplomacy.
She said: “I think it really is time for dialogue. We are ready to offer our role for good services as a mediator. I think in the upcoming weeks a lot will depend on how the US and China can have an influence in this crisis.”
The North Korean leader Kim-Jong-un conducted a hydrogen bomb test which was so powerful it is believed to have caused an earthquake.
This has caused tensions to rise even further on the Korean peninsula.
Last week North Korea launched a missile from Pyongyang towards the Sea of Japan.
The missile passed over Japanese territory before it broke into three pieces, according to Tokyo.
In the footage, sirens can be heard screeching as the government’s J-Alert warning system told people to be prepared.
Japan’s Chief Cabinet Secretary Yoshihide Suga branded the test as an “unprecedented, grave threat”.
Speaking on Sky News a student at Hokkaido University, Joe Narsico, said there was not much the Japanese people could do if Kim Jong-un launched a missile towards the country.
He said: “There were several things, there were designated evacuation centre’s. There was cover in basements.
“But ultimately, we can not do anything about it. Once the missile would hit, I think that we just have to psych ourselves that this is really happening and we just have to be mindful of our scenario when it happens.”