May 9 marks the 70th anniversary of the Soviet Union's victory over Nazi Germany in World War II, and around 20 foreign leaders, including Chinese President Xi Jinping, are expected to attend a commemoration event in Moscow.
Asked yesterday about the possible attendance of Kim Jong-Un, Russian Foreign Minister Sergei Lavrov burst out laughing before telling reporters that North Korea had given a "positive" response to Moscow's invitation.
If confirmed, the visit would be Kim's first foreign trip since taking power just over three years ago following the death of his father, Kim Jong-Il.
At a regular briefing today, Chinese foreign ministry spokeswoman Hua Chunying said that North Korea and Russia are "both friendly neighbours of China and they have both made sacrifices and great contributions" during the Second World War.
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A possible Kim visit to Russia, she said, would be "conducive to regional peace and stability".
Hua did not provide further details on Xi's schedule, or on any plans for either a visit by the Chinese leader to North Korea, or by Kim to Beijing.
But Xi and Kim have kept their distance since each assumed power and the Chinese leader's first visit as head of state to the Korean peninsula was to the capitalist South last year, rather than the North.
A potential Kim visit could also have broader repercussions for Russia and Asia.
Georgy Toloraya, head of Korean Programmes at the Institute of Economy at the Russian Academy of Science, said opinion was divided on the benefits to Russian President Vladimir Putin of hosting the leader of a nation viewed by most as a nuclear and human rights pariah.
"But others can say that the West's opinion of Putin is so bad right now that he has nothing to lose by getting closer with Kim," he added.
It was unclear to what extent Kim's attendance would influence South Korean President Park Geun-Hye's decision to accept or decline Moscow's invitation.