An old Elon Musk email to Tesla managers has gone viral again, revealing a strict three-step rule on how to respond to his instructions. The message has sparked a fresh debate over whether speed-driven leadership builds efficiency or pressure.

President Donald Trump defended Elon Musk's email demand to federal employees, telling them to explain their recent accomplishments or risk getting fired, even as government agency officials were told that compliance with Musk's edict was voluntary.