Elbridge A. Colby was the lead architect of the 2018 National Defense Strategy, the most significant revision of US defense strategy in a generation. Here he lays out how America's defense must change to address China's growing power and ambition. Based firmly in the realist tradition but deeply engaged in current policy, this book offers a clear framework for what America's goals in confronting China must be, how its military strategy must change, and how it must prioritize these goals over its lesser interests.

Today, liberalism faces threats from across the political spectrum. While right-wing populists and leftist purists righteously violate liberal norms, theorists of liberalism seem to have little to say. In Liberalism in Dark Times, Joshua Cherniss issues a rousing defense of the liberal tradition, drawing on a neglected strand of liberal thought. Assaults on liberalism - a political order characterized by limits on political power and respect for individual rights - are nothing new.

Breakthroughs in genetics present us with a promise and a predicament. The promise is that we will soon be able to treat and prevent a host of debilitating diseases. The predicament is that our newfound genetic knowledge may enable us to manipulate our nature - to enhance our genetic traits and those of our children. Although most people find at least some forms of genetic engineering disquieting, it is not easy to articulate why.

To understand world politics, you need to understand how states think. Are states rational? Much of international relations theory assumes that they are. But many scholars believe that political leaders rarely act rationally. The issue is crucial for both the study and practice of international politics. John J. Mearsheimer and Sebastian Rosato argue that rational decisions in international politics rest on credible theories about how the world works and emerge from deliberative decision‑making processes.

World politics is entering a new phase, in which the great divisions among humankind and the dominating source of international conflict will be cultural.

Can we really learn to be happy? Yes, we can. Each semester, nearly 1,400 students sign up for Harvard professor Tal Ben-Shahar's life-changing class, "How to Get Happy". Currently it's the hottest course at Harvard, taken by 20 percent of its graduates. In Happier, Professor Ben-Shahar brings the ideas of the Ivory Tower to Main Street, distilling the lessons and exercises from his course into a slim volume of practical wisdom.

Linguistics falls in the gap between arts and science, on the edges of which the most fascinating discoveries and the most important problems are found. Rather than following the conventional organization of many contemporary introductions to the subject, the author of this stimulating guide begins his discussion with the oldest, "arts" end of the subject and moves chronologically through to the newest research - the "science" aspects.

Words. We use them all the time, every day, mostly without giving them much thought at all. We take for granted that they’re here at our disposal whenever we need them. But if you’ve ever wished you could communicate more effectively, words are the place to start. It’s incumbent upon you to choose the best words to accomplish your goals, because how you choose to communicate influences—well, everything! The power of communication shapes our professional goals, our relationships, and our lives—so the words we choose to use carry a great deal of power.

International security is never out of the headlines. War and peace, military strategy, the proliferation of nuclear weapons and revisionist states remain central to the discussion, but concerns such as climate change, migration, poverty, health, and international terrorism have complicated the field. So what really matters: the traditional prioritization of state security or the security needs of individuals, humanity, and the biosphere?

How much faith should we place in what scientists tell us? Is it possible for scientific knowledge to be fully "objective"? What, really, can be defined as science? In the second edition of this very short introduction, Samir Okasha explores the main themes and theories of contemporary philosophy of science and investigates fascinating, challenging questions such as these.