North Korea’s top diplomat is set to hold talks in Moscow following reports that Pyongyang has sent thousands of troops to support Russia’s action in Ukraine.

Russian President Vladimir Putin held a meeting in Moscow with North Korean Foreign Minister Choe Son Hui, state news agency TASS reported. Another agency, Interfax, said the meeting took place on Monday.

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Russian President Vladimir Putin held a meeting in Moscow on November 4 with North Korean Foreign Minister Choe Son Hui, at a time of mounting concern in the West about growing military ties between the two countries.

Video of the meeting showed the pair shaking hands for a full minute as Putin greeted Choe Son Hui. Putin noted that they were meeting on Russia's National Unity Day, a public holiday, and Choe conveyed "sincere,