New Delhi, Aug. 5 -- The global economic scenario is unraveling at breakneck speed, with artificial intelligence (AI) and tariff wars its most visible drivers. From boardrooms in Mumbai to Cincinnati, companies are reckoning with what US politician Donald Rumsfeld once called the "unknown unknowns".

One clear sign of this reckoning is the sudden, sometimes opaque leadership changes at companies.

Take Procter & Gamble (P&G) and Jaguar Land Rover (JLR), both of which just announced unexpected changes at the top. At P&G, chief operating officer Shailesh Jejurikar was named as the new CEO while at JLR Adrian Mardell will step down after a controversial makeover of the brand went down badly. India, too, hasn't been immune to the need for fre...