North Korean leader Kim Jong-Il headed to China on Thursday after completing rare a Siberian summit with Russian President Dmitry Medvedev in which he offered a nuclear concession greeted with suspicion by Washington. A local police source in the Russian region of Chita on China’s border said the train carrying the Stalinist state’s 69-year-old leader approached the Zabaikalsk-Manchuria border crossing on Thursday evening. “The train left the (Zabaikalsk) station and headed toward the Chinese border,” the unnamed official told the RIA Novosti news agency.