The Jungle Grows Back: America and Our Imperiled World is a 2018 book by American historian and foreign policy commentator Robert Kagan, published by Alfred A. Knopf. The book's argument is that the world order created by the United States in the wake of World War II is being overrun by jungle-like chaos.
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Further reading
Book Review: The Jungle Grows Back by Francis P. Sempa Book Review: The Jungle Grows Back by Jim Miles US China power struggle: A new world order looms, but which stars will guide the way? by Dirk Kurbjuweit Book Review: Robert Kagan’s “The Jungle Grows Back” by Mark Chapman The US Foreign Policy Consensus in Crisis by Richard W. Coughlin Robert Kagan’s Big Wrong Idea by Michael Lind Robert Kagan and the Many Meanings of Liberalism by Paul Marshall Dictatorships and Democracy: Kagan Contra Kirkpatrick by Matt Gobush