China's vice FM departs North Korea after diplomatic visit

China's Vice Foreign Minister Sun Weidong departed North Korea on Saturday, a day after Sun met with North Korea's top diplomats in Pyongyang. Beijing is North Korea's biggest economic benefactor and a traditional ally, and North Korea leader Kim Jong Un has sought to shore up his country's relationship with China. The two sides agreed to continue to strengthen tactical cooperation and keep pace with each other to defend the common core interests.