China’s president-in-waiting Xi Jinping railed to appear yesterday on a broadcast with other top-ranking officials.

Back-problems are the current odds on favorite but there is skepticism that a sore back would keep him out of the spotlight with international attention growing. Reuters has the latest from the rumor mill.

Among various theories being floated, the 59-year-old Xi has had a stroke or heart attack or was the target of an assassination attempt.