Bolton, who served as Trump’s national security adviser from 2018 to 2019, told The Guardian the president-elect has an “inability to focus” and bases his decisions on personal relationships and “neuron flashes.”

“What I believed was that, like every American president before him, the weight of the responsibilities, certainly in national security, the gravity of the issues that he was confronting, the consequences of his decisions, would discipline his thinking in a way that would produce serious outcomes,” Bolton told The Guardian.

Since leaving his administration, Bolton has been an outspoken critic of Trump. In 2020, he published The Room Where it Happened: A White House Memoir, a scathing account of his experience serving in his first administration.