As war in the Middle East escalates, the financial fallout extends beyond energy price and supply-chain disruptions. Vulnerabilities in the US$3 trillion-plus global private-credit market are accelerating, driving investors to safe havens, while global finance undergoes a rapid transformation. China, the world’s largest creditor to developing countries, will feel the repercussions. This is the first real stress test confronting the vast lending empire. A meltdown was inevitable; only the timing...