Chinese President Xi Jinping (C), Russian President Vladimir Putin (L) and Mongolian President Khaltmaa Battulga attend a trilateral meeting in Qingdao, east China's Shandong Province, June 9, 2018. The trilateral meeting, the fourth of its kind, was chaired by Xi Jinping. (Xinhua/Li Tao)

The presidents of China, Russia and Mongolia pledged to strengthen trilateral cooperation during their meeting here on Saturday.

The trilateral meeting, the fourth of its kind, was chaired by Chinese President Xi Jinping and attended by Russian President Vladimir Putin and Mongolian President Khaltmaa Battulga. They reviewed the achievements of trilateral cooperation and discussed priority tasks and directions for the next phase.

Putin and Battulga are in Qingdao for the 18th Shanghai Cooperation Organization summit.