From the Baltic to the South China Sea, newly assertive authoritarian states sense an opportunity to resurrect old empires or build new ones at America's expense. Hoping that U.S. decline is real, nations such as Russia, Iran, and China are testing Washington's resolve by targeting vulnerable allies at the frontiers of American power. The Unquiet Frontier explains why the United States needs a new grand strategy that uses strong frontier alliance networks to raise the costs of military aggression in the new century.

Jakub Grygiel and Wess Mitchell describe the aggressive methods rival nations are using to test U.S. power in strategically critical regions throughout the world. They show how rising and revisionist powers are putting pressure on our frontier allies—countries like Poland, Israel, and Taiwan—to gauge our leaders' commitment to upholding the U.S.-led global order. To cope with these dangerous dynamics, nervous U.S. allies are diversifying their national-security "menu cards" by beefing up their militaries or even aligning with their aggressors. Grygiel and Mitchell reveal how numerous would-be great powers use an arsenal of asymmetric techniques to probe and sift American strength across several regions simultaneously, and how rivals and allies alike are learning from America's management of increasingly interlinked global crises to hone effective strategies of their own.

The Unquiet Frontier demonstrates why the United States must strengthen the international order that has provided greater benefits to the world than any in history.

从波罗的海到南中国海，新的专制国家感到有机会复活旧帝国或以美国为代价建立新帝国。俄罗斯、伊朗和中国等国家希望美国的衰落是真实的，它们正通过在美国权力的前沿瞄准脆弱的盟友来测试华盛顿的决心。不平静的边疆》解释了为什么美国需要一个新的大战略，利用强大的边疆联盟网络来提高新世纪的军事侵略成本。

雅库布-格里耶尔和韦斯-米切尔描述了对手国家在全世界战略关键地区用来测试美国实力的侵略性方法。他们展示了崛起的大国和修正主义大国如何对我们的边境盟友--波兰、以色列和台湾等国家施加压力，以衡量我们的领导人对维护美国主导的全球秩序的承诺。为了应对这些危险的动态，紧张的美国盟友正在通过加强军事力量甚至与侵略者结盟来使其国家安全 "菜单卡 "多样化。Grygiel和Mitchell揭示了众多潜在的大国是如何利用一系列不对称的技术在几个地区同时探测和筛选美国的实力，以及对手和盟国是如何从美国对日益相互关联的全球危机的管理中学习，以磨练自己的有效战略。

不平静的边疆》展示了为什么美国必须加强国际秩序，因为它为世界提供了比历史上任何时候都更大的利益。

通过www.DeepL.com/Translator（免费版）翻译