China's next leader is in Washington today, at the start of a trip across the country. Since that country's leadership changes only once every ten years, it could be a crucial moment. When he welcomed China's Vice President to the US this morning, Vice President Biden told Xi Jinping, "We're not always going to see eye to eye." Later, there was a meeting with President Obama, who expressed his belief that "a strong and prosperous China is one that can help to bring stability and prosperity to the region and to the world." Nathan Hodge is national security reporter for the Wall Street Journal.