North Korea is preparing to test a long-range missile that it believes can reach the west coast of the United States, a Russian lawmaker just returned from a visit to Pyongyang has been quoted as saying.
Anton Morozov, a member of the Russian lower house of parliament's international affairs committee, and two other Russian lawmakers visited Pyongyang on October 2-6, Russia's RIA news agency reported on Friday.
"They are preparing for new tests of a long-range missile. They even gave us mathematical calculations that they believe prove that their missile can hit the west coast of the United States," RIA quoted Mr Morozov as saying.
"As far as we understand, they intend to launch one more long-range missile in the near future. And in general, their mood is rather belligerent."
Reuters was not able to independently verify Mr Morozov's account, and he did not specify which North Korean officials had given him the information about the planned test.
His delegation had "high-level" meetings in Pyongyang, RIA news agency said, citing the Russian embassy in the North Korean capital.
Tensions over North Korea's nuclear program have been running high in the past several weeks since Pyongyang staged a series of missile tests, and conducted a test explosion on September 3 of what it said was a hydrogen bomb.
There has also been an exchange of tough rhetoric between Pyongyang and Washington.
US President Donald Trump threatened to "totally destroy" North Korea if it threatens the United States. North Korean leader Kim Jong Un responded by calling Mr Trump deranged and saying he would pay dearly for his threat.
Mr Morozov is a member of the LDPR, a right-wing populist party. It casts itself as an opposition party, but hews close to the Kremlin line on matters of international affairs.
Describing meetings with North Korean officials, Mr Morozov said they "displayed serious determination and bellicose rhetoric", RIA reported.
"The situation, of course, demands the swiftest intervention of all interested states, particularly those represented in the region, in order to prevent wide-scale military action," the agency quoted him as saying.
Russia has closer relations with Pyongyang than many other world powers, linked in part to Kim Il Sung, the founder of North Korea and the current leader's grand-father, having lived for a time in the Soviet Union.
Russian President Vladimir Putin has joined other world powers in condemning North Korea's weapons program but has taken a softer line than Western governments.
Mr Putin has said that Pyongyang will not be cowed into giving up its weapons program. He has accused Washington of trying to effect regime change in North Korea, and predicted that would unleash chaos.