Game-changer is the term being used to describe the state visit by China's President Xi Jinping to Pakistan. President Xi left today after signing off on investment projects worth tens of billions of dollars. NPR's Philip Reeves reports on what this means for Pakistan's other historic ally and funder, the United States. He sent this report from Pakistan's capital, Islamabad.
PHILIP REEVES, BYLINE: Xi Jinping today became the first Chinese president to address a joint session of Pakistan's parliament.