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US reveals joint patrols in South China Sea with Philippines

Philippine President Benigno Aquino III, right, shakes hands with U.S. Defense Secretary Ash Carter during his courtesy call at the Malacanang presidential palace in Manila, Philippines on Thursday, April 14, 2016. Carter is in the country as US and Philippine forces participate in a joint military exercise called shoulder-to-shoulder or "Balikatan". (Romeo Ranoco/Pool Photo via AP)

Snapshots: President Aquino's state visit in China

On the invitation of Chinese President Hu Jintao, President Benigno Aquino III is in China for a four-day state visit.