At a precarious moment when almost everyone has suddenly become either a geopolitics expert or a clear-eyed political realist—or both—the latest intervention by Patrick Porter is a well-timed addition to both the international relations theory literature and contemporary debates about what is to be done (or perhaps better, what is to be avoided) in our time.

How to Survive a Hostile World delivers what it promises: “a short defense of the realist worldview” (p. 2). The book is written in clear, accessible language with little to no jargon, making it an unusually easy read for a work of political theory and well-suited to a wide audience that includes scholars, practitioners, students, and general readers. Across three concise chapters, Porter advances a sustained defense of realism as a worldview, restating the case for realism in the politics of the here and now, where its relevance is once again widely asserted yet often poorly understood.

Three chapters advance three core claims: first, that realism is “moral”; second, that realism is “realistic”; and third, that realism is “for everyone.” Together they amount to a cumulative case for realism understood less as a predictive theory than as a worldview—without, however, joining the chorus that would drive a sharp wedge between “classicals” and “structuralists” (pp. 58–59). In doing so, the book explains both the nature and the worth of realism as a way of thinking about the political, the international, and the uneasy relationship between the two. In this respect, the book is synthetic rather than revisionist.

The first chapter takes up the claim that realism is moral, confronting the long-standing criticism that realism is amoral, cynical, or indifferent to ethical considerations. Porter takes as his starting point Ken Booth’s well-known critique of realism (p. 5) and works through it methodically in order to counter it. He situates realism in relation to what he identifies as its two principal rival families of thought: the “liberal” tradition and “radical” approaches, encompassing Marxist, feminist, and postcolonial theories (p. 11). Through careful theoretical juxtaposition, Porter argues that realism offers a more ethically serious framework for political judgment.

The “Realism is Moral” chapter does not rest at the level of abstract comparison. Porter applies realist reasoning to three substantive ethical and political challenges: nuclear proliferation, climate change, and the problem of dealing with dictators, including the question of regime change (pp. 32–49). In each case, realism is presented as an ethic of responsibility rather than moral purity, emphasizing restraint, trade-offs, and the tragic structure of political choice. Without caricaturing so-called “antirealists” (p. 24), Porter nonetheless makes clear where he believes realism’s moral advantage lies. Forever skeptical of attempts to wish away or legislate away current and future conflict, realism’s enduring tragedy lies in the search for “the right balance between war preparedness and war avoidance” (p. 55).

In the second chapter, Porter moves thoroughly through realism and the many “realisms” (p. 58), acknowledging their differences while underscoring the fundamental assumptions about human, group, and political behavior that unite realist thinkers past and present. From this synthetic vantage point, he challenges a range of antirealist positions on cooperation, focusing in particular on the political nature of institutions and competing explanations of peace. Kantian accounts—most notably Democratic Peace Theory—are set against a realist explanation of order grounded in strategic interaction, including the logic of nuclear deterrence as a source of stability rather than moral convergence (pp. 77–90).

Building on this argument, Porter extends realist reasoning to a series of cases, ranging from the rise of human rights discourse and the existence of the International Criminal Court to the creation of the European Union. In each instance, institutions and norms are treated not as escapes from power politics but as outcomes of it, constrained by the strategic interests of states and the political contexts in which their leaders, democratic or authoritarian, operate. The “Realism is Realistic” chapter drives home the point that for “every realist failure of point prediction,” as Porter writes, “there are more cases of realists correctly warning against overexcited longer-term prophecies that profound change is at hand” (p. 100).

The third chapter advances the claim that realism is for everyone. True to the synthetic spirit of How to Survive a Hostile World, Porter’s defense of realism does not shy away from two thorny charges commonly leveled against the realist worldview: that it is Western or Eurocentric in orientation, and that it serves only the interests of the powerful. He approaches these criticisms with care, noting that the relevant question is not what individual self-described realists have thought or done. The more consequential question is whether realism is “inherently” (p. 101) Eurocentric or provincial. On this point, in the “Realism is for Everyone” chapter, Porter argues convincingly that it is not. As he puts it, realism “has travelled widely” (p. 138), from East to West and North to South, taken up by the powerful and the vulnerable (seeking power) alike.

Power, for Porter, is not a normative endorsement but a political fact—one that realism insists must be confronted rather than denied or rendered taboo. This commitment also underpins his response to gender critiques. Even Porter suggests, “in a post-patriarchal world, fully emancipated from gender hierarchy, competitive power politics would likely persist” (p. 139). Few realists—old or new, and across ideological persuasions—would dissent. Realism’s claim to universality thus rests not on cultural or historical particularism, but on a shared, fundamental diagnosis of the enduring conditions under which political actors must think and act.

The epilogue effectively restates the case for realism Porter has made across the book’s three chapters, drawing together its core claims with clarity and restraint. It reinforces the sense in which How to Survive a Hostile World is a defense of realism as a way of thinking and judging in a world marked by uncertainty and conflict. Yet the epilogue also hints at a set of questions that the book largely leaves open. Porter opens the book by acknowledging his own “melancholic streak” (p. 1), a revealing admission that gestures toward the affective and existential dimensions of realist thinking. Without psychoanalyzing either the author or the argument, one might nonetheless have welcomed a more extended reflection on where this worldview ultimately leads—both theoretically and practically—if, indeed, it can be said to lead anywhere clearly defined.

Much of the book’s argument will strike seasoned readers as familiar, even orthodox. But this is the point. Porter does not innovate here, but clarifies, unifies, and defends realism at a moment when it is widely invoked yet still more often caricatured. In this respect, the book succeeds admirably. It is fair-minded, synthetic, and generous toward rival approaches, even as it remains clear about where Porter believes realism’s many advantages lie.

How to Survive a Hostile World provides an accessible and intellectually honest account of realism as a worldview. For students and general readers, the book offers an excellent entry point into a tradition too often misunderstood. For practitioners, it provides a sober reminder of the limits of political action and the costs of illusion. And for scholars, it stands as a measured restatement of realism’s enduring appeal in a world that remains, in Porter’s telling, stubbornly hostile.