Daniel Woolf is professor of history at Queen’s University where he also served as principal and vice-chancellor from 2009 to 2019. Consider the following situation: Two countries share a border, and one is much more powerful than the other. The more powerful country has recently elected a hate-filled, racist sociopath once regarded as a vulgar clown but who is now belligerently trying to avenge personal and political slights and make his country great again, purging it of what he sees as antisocial and even subhuman elements. This autocrat has expansionist designs. The smaller country speaks, for the most part, the...