The public intellectual, as a person and ideal, has a long and storied history. Writing in venues like the New Republic and Commentary, such intellectuals were always expected to opine on a broad array of topics, from foreign policy to literature to economics. Yet in recent years a new kind of thinker has supplanted that archetype: the thought leader. Equipped with one big idea, thought leaders focus their energies on TED talks rather than highbrow periodicals.
How did this shift happen? In The Ideas Industry, Daniel W. Drezner points to the roles of political polarization, heightened inequality, and eroding trust in authority as ushering in the change. In contrast to public intellectuals, thought leaders gain fame as single-idea merchants. Their ideas are often laudable and highly ambitious: ending global poverty by 2025, for example. But instead of a class composed of university professors and freelance intellectuals debating in highbrow magazines, thought leaders often work through institutions that are closed to the public. They are more immune to criticism-and in this century, the criticism of public intellectuals also counts for less.

Every president faces criticism and caricature. Donald Trump, however, is unique in that he is routinely characterized in ways more suitable for a toddler. What’s more, it is not just Democrats, pundits, or protestors who compare the president to a child; Trump’s staffers, subordinates, and allies on Capitol Hill also describe Trump like a small, badly behaved preschooler.
In April 2017, Daniel W. Drezner began curating every example he could find of a Trump ally describing the president like a toddler. So far, he’s collected more than one thousand tweets-a rate of more than one a day. In The Toddler-in-Chief, Drezner draws on these examples to take listeners through the different dimensions of Trump’s infantile behavior, from temper tantrums to poor impulse control to the possibility that the President has had too much screen time. How much damage can really be done by a giant man-baby? Quite a lot, Drezner argues, due to the winnowing away of presidential checks and balances over the past fifty years. In this book, Drezner follows his theme-the specific ways in which sharing some of the traits of a toddler makes a person ill-suited to the presidency-to show the lasting, deleterious impact the Trump administration will have on American foreign policy and democracy.