Financial markets in turmoil as investors flee a South Africa crisis of flailing President Zuma

JOHANNESBURG, South Africa — The late-night statement from South Africa’s president was short and sharp. But it contained big news: Jacob Zuma had fired his respected finance minister and replaced him with a little-known backbencher. A day later South Africa was still reeling from what critics have called “an act of willful sabotage” and a “grotesquely…