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DPRK leader Kim Jong Un is in Russia's far eastern city of Vladivostok for a highly-anticipated summit with President Vladimir Putin. Kim Jong Un is not the first DPRK leader to visit Russia. His father and grandfather both set foot in the country several times. What makes his visit different from those of his predecessors'? Artyom Lukin, professor of International Relations at the Far Eastern Federal University in Vladivostok, Russia, shared his thoughts.