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Fig. 0.1 The map of ideas: 6 fields, 30 concepts

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Balance of power

Foreign Policy

The balance of power is the idea that states stay secure when power in the international system is spread out, so that no single state can dominate the rest. When one country grows too powerful, others arm themselves or form alliances against it until a rough equilibrium returns.

Read the explainer

Each concept is placed by where it is argued: at home or between states, as a theory or inside institutions. Placement is orientation, not judgement. Point at a concept to read its definition; ticked points are concepts you have read.

Placement: Policy Review editors, reviewed October 2026.

Six fields, one method

Each field gathers the concepts that are usually argued together. Pick one, or follow a point on the map.

Fig. 0.2 The fields and what they cover
FieldWhat it coversConceptsCount
Foreign Policy How states deal with one another: power, alliances, doctrines and the theories that explain them. Balance of power, Eisenhower Doctrine, Hard power, Isolationism 7
Security War, deterrence, terrorism and the private armies in between. Mercenaries, Mutually assured destruction, Terrorism definition, Failed state 4
Law Constitutions, courts and the doctrines judges use to read them. Judicial activism, Judicial review, Stare decisis, Textualism 4
Ideas Ideologies, forms of democracy and the arguments behind them. Civil society, Direct democracy, Neoconservatism, Political socialization 7
Economy & Society Markets, welfare, trade and the populations they serve. Free trade, Globalization, Keynesian economics, Supply-side economics 5
Policy Analysis The craft itself: what public policy is, and how briefs, memos and evaluations are made. Policy brief, Think tank, What is public policy? 3

Essays that are still argued about

From 1977 to 2013 this address published the journal Policy Review. For its most-cited essays we write new guides: the argument, the context, the reception, and a link to the original.

All essay guides
  1. Eminem Is Right: Mary Eberstadt’s Essay on Music and Broken Homes Mary Eberstadt argued in 2004 that much of the most popular rock and rap around 2000 was about divorce, absent fathers and inattentive parents,… Essay guide · 5 min
  2. The Future of Tradition by Lee Harris: 7 Ideas Behind the Essay In "The Future of Tradition" (Policy Review, 2005), Lee Harris argued that traditions live as felt codes of behavior passed on by families and… Essay guide · 6 min
  3. The Terrorism to Come: Walter Laqueur on the Next Threat In 2004 Walter Laqueur argued that poverty does not explain terrorism, that settling local conflicts would not stop global jihadism, and that Europe was… Essay guide · 5 min
  4. The Media and Medievalism: Robert Kaplan on Press Power Robert D. Kaplan argued in 2004 that the global news media had become an unelected, unaccountable power, comparable to the medieval church, that judges… Essay guide · 6 min
  5. The Mismeasure of Poverty: How Nicholas Eberstadt Tested the Official Poverty Measure In a 2006 Policy Review essay, Nicholas Eberstadt argued that the official U.S. poverty rate no longer measures the fixed level of hardship it… Essay guide · 5 min
  6. Conflict of Interest Disclosure and Its Limits: Robert Hahn’s Essay In a 2002 Policy Review essay, economist Robert W. Hahn argued that 'full disclosure' of conflicts of interest is hard to define, is applied… Essay guide · 6 min

How a concept is explained here

  1. The definition first. Two sentences that answer the question you searched for.
  2. Its place on the map. Which field it belongs to, and which concepts it is argued against.
  3. Every side in its best terms. Proponents and critics, described the way they would describe themselves.
  4. Sources you can check. Primary texts, court decisions and official data, listed at the end and dated.
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