"The Americans should start with explaining their intentions to us all".
Last month President Donald Trump said that Russian Federation was hurting U.S. efforts to disarm the North Korea of its nuclear weapons.
"We are already seeing signs of problems, of cashflow problems in North Korea".
"I think the Chinese are doing a lot", Tillerson told reporters when asked if he shares the president's sentiment. The UN also barred the hiring of North Korean guest workers and capped exports of refined petroleum products.
"They will be confident that they can put a nuke on top of a missile that can reach the American homeland".
North Korea tested a missile this week that experts believe showed that the rogue regime could launch an attack that reaches the United States mainland, spiking concerns that the country may soon be able to attach a miniaturized nuclear weapon to one of those missiles.
He said: "You can't rule out any scenario, including the start of histories next great war".
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The pair broke with tradition by living at Trump Tower in NY since the inauguration so that Barron, 11, could finish the school year.
He also complained that the United States was "totally ignoring" a UN demand for talks with North Korea."I think it's a big mistake", said Mr Lavrov. China provides about 90 percent of North Korea's energy needs and previous year shipped around 6,000 barrels per day to Pyongyang.
"We have got to take them at their word, so this could be a global conflict".
On Wednesday, North Korea tested the Hwasong-15 missile, which splashed off the Japan coast.
While Russia condemned North Korea's latest missile test, Lavrov also raised concerns about the large-scale U.S.
Pyongyang is believed to have anywhere between 25 to 60 nuclear warheads, but experts think it's still at least a year or so away from developing the technology that would allow it to successfully launch a nuclear-tipped ballistic missile and have it reach the US mainland.
"Let them say it directly... then we can take a decision about how to react", said Lavrov, who also rejected calls by Nikki Haley, the USA ambassador to the United Nations, for Russian Federation to cut ties with Pyongyang, stopping the sale of oil products and deporting North Korean workers. If war does come, it will be because of continued acts of aggression like we witnessed yesterday ...
Secretary of State Rex Tillerson said Thursday that China "could do more with the oil" to help rein in North Korea after its latest launch of an intercontinental ballistic missile this week.
The US President travelled across Asia meeting with allies to present a united front to stand up against the brutal dictator's hermit kingdom.