US Ambassador Nikki Haley told the UN Security Council that Washington would present a new sanctions resolution to be negotiated in the coming days, but Russian President Vladimir Putin on Tuesday rejected US calls for more sanctions as "useless".
North Korean leader Kim Jong Un claps during a celebration for nuclear scientists and engineers who contributed to a hydrogen bomb test, in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang on September 10, 2017.
Fears that North Korea is developing an arsenal of intercontinental ballistic missiles capable of striking cities in the us and Canada have heightened concerns about the possibility of war.
"It would be great if something else could be worked out", he said, while adding that if the U.S. is left with no choice but to attack, "It will be a very sad day for North Korea".
"The South Korean president asked for Russia's cooperation in ratcheting up the level of UNSC sanctions on North Korea by cutting off its crude oil supply".
"The recent self-defence measures by my country, DPRK, are a gift package addressed to none other than the United States", he told a disarmament conference.
In a tweet, Mr Trump said: "I am allowing Japan and South Korea to buy a substantially increased amount of highly sophisticated military equipment from the United States". "Does that mean that the diplomatic solution is easy? No!"
It was not immediately clear if the draft resolution had the support of North Korean ally China.
As well as the US, South Korea and Japan, plus permanent Security Council members France and Britain, have called for stronger measures against it, with several arguing for a potentially crippling oil embargo.
Moon said after the talks: "It is more important than anything else to resolve the North's nuclear and missile issues, which are the most urgent and gravest challenges facing this region, at an earliest date".
"We have kicked the can down the road long enough", she added.
North Korea last week fired n ICBM test over the Japanese mainland in what it said was preparation for a strike on the US Pacific territory of Guam.
Pyongyang said the test was of an H-bomb that could be fitted onto a missile, heightening tensions over its weapons ambitions and prompting global condemnation.
South Korea has warned its citizens in China to avoid "friction" and "needless arguments" with Chinese people after the USA military added more launchers to a contentious missile defense system in South Korea that Beijing opposes. "We will respond to the barbaric plotting around sanctions and pressure by the United States with powerful counter measures of our own", North Korea said in a statement by its delegation to an economic forum in Vladivostok, in Russia's Far East.