“A fox knows many things, but a hedgehog knows one big thing.” Scott Horton is the liberty movement’s foreign policy hedgehog, endeavoring to convince the American public of one essential truth: the folly of war. But within that sphere, Horton is a fox, weaving an encyclopedic knowledge of various conflicts into an elaborate and convincing tapestry that indicts elites, intellectuals, the military-industrial complex, and—with characteristic vitriol—neoconservatives in pushing the US toward unnecessary wars. Provoked: How Washington Started the New Cold War with Russia and the Catastrophe in...