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North Korean leader Kim Jong-un has arrived in China's border city of Dandong via a newly opened bridge linking the two nations, according to a South Korean government source reported by Yonhap News Agency on Saturday, Oct. 24. The visit is a surprise, his first to China in more than a year, and a ruling party source told Yonhap that Kim appears to be planning to return home the same day. KBS World and Korea Times also reported the arrival, citing the same government source. Separately, Korea Times reported that Kim called for the military to build the "strongest army" in a speech to commanders in Pyongyang, as reported by North Korean state media on the same day.