Chinese missile frigate Yulin leaves the Changi Naval Base in Singapore for the joint Sino-Singapore maritime drill “Cooperation 2015”, May 24, 2015. China and Singapore pledged to deepen military cooperation in hopes of making contributions to regional peace and stability, Chinese Defense Minister Chang Wanquan said during a meeting with Ng Chee Meng, Singapore's Chief of Defense Force in April.(Photo: China News Service/Jiang Hui)
