
Billionaire Elon Musk blasted President Donald Trump's senior trade advisor Peter Navarro as "truly a moron" and "dumber than a sack of bricks" on Tuesday in a growing rift over the US tariff policy that has rocked the world.
The extraordinary public spat came after Navarro described the Tesla boss and so-called Department of Government Efficiency (DOGE) chief as "not a car manufacturer" but "a car assembler" who relies on imported parts.