John Gartner, founder of Duty To Warn, has publicly claimed that Donald Trump may be mentally unstable and possibly suffering from dementia, though no medical evidence has confirmed those claims. In a SiriusXM interview, Gartner argued that Trump’s behavior and grandiose statements show signs of cognitive decline and warned that his leadership could become dangerous because of the power he holds as president. He pointed to Trump comparing himself to figures like Jesus, Caesar, Napoleon, and Alexander the Great, and controversially predicted that Trump could one day cause destruction on a massive scale.
