Mr Trump's comments are in response to accusations Mr Tillerson had called him a “moron," a claim Mr Tillerson has not denied.
The latest twist comes as reports of unrest within the Trump administration continue to surface.
Trump challenges his secretary of state to IQ test
Tổng Thống Donald Trump và Ngoại Trưởng Rex Tillerson Source: AAP
United States president Donald Trump has inferred in an interview he is smarter than his secretary of state, Rex Tillerson, suggesting the two should "compare IQ tests."
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