Elon Musk has called one of President Donald Trump's top economic aides, Peter Navarro a "moron" on X. 
Musk and Navarro, a long-time trade adviser to Trump, have been publicly feuding over Trump’s decision to impose sweeping tariffs on most U.S trading partners. 
This move has caused a market sell-off and raised concerns among analysts about a potential recession in the United States.
The White House responded with "boys will be boys".
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