China to its people: Spies are everywhere, help us catch them

"We must be prepared for worst-case and extreme scenarios," Xi told China's National Security Commission in May. He called on officials to "enhance real-time monitoring" and "get prepared for actual combat." The sense of urgency may be heightened by the fact that Beijing is confronting some of its biggest challenges since Xi's ascension more than a decade ago. Beyond the economic gloom, China's relations with the West are increasingly tense. And unexplained personnel changes at the highest tiers of power — including the sudden removal in July of China's foreign minister and two high-ranking generals — suggest that Xi may…