Chinese President Xi Jinping (R) meets with U.S. President Barack Obama in The Hague, the Netherlands, March 24, 2014. Xi Jinping met with Barack Obama on the sidelines of the Nuclear Security Summit. Later this month, Xi will pay his first state visit to the U.S. since he took office in 2013. Here are four major meetings between Xi and Obama since 2013. (Xinhua/Lan Hongguang)