By Hyonhee ShinSEOUL (Reuters) -North Korean leader Kim Jong Un was headed home after making a final stop in Russia's far eastern city of Vladivostok, where he visited a university, an aquarium and an animal food plant, state media KCNA reported on Monday. Kim spent two days in Vladivostok while inspecting various facilities in the fields of military, economy, science, education and culture, before bidding farewell at a send-off ceremony at the Artyom station, KCNA said. It wrapped up Kim's unusually lengthy, week-long trip to Russia, during which he pledged to step up military and economic cooperation with President Vladimir Putin. He also met North Korean students studying science and technology at the university, KCNA said, learning about their lives there and taking a photo together. The rare summit between Kim and Putin has prompted the United States and South Korea to warn against any weapons trade and other military cooperation as Russia presses its invasion of Ukraine and North Korea races to advance its nuclear programmes.

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Persons: Shin, Kim Jong Un, Kim, KCNA, Vladimir Putin, Putin, Alexandr Kozlov, Hyonhee Shin, Lidia KellyEditing, Sandra Maler, Diane Craft Organizations: Eastern Federal University, North, Maritime Territorial Locations: Shin SEOUL, Russia's, Vladivostok, Russia, North, Korea, Kim, United States, South Korea, Ukraine, North Korea, Washington, Seoul, Moscow, Pyongyang, Russian