In 2006, Kagan wrote that Russia and China are the greatest "challenge liberalism faces today": "Nor do Russia and China welcome the liberal West's efforts to promote liberal politics around the globe, least of all in regions of strategic importance to them. ...
2006年，卡根写道俄罗斯和中国是“自由主义当今面临的挑战”中最棘手的：“俄罗斯和中国也不欢迎自由的西方世界为促进全球自由政治所作出的努力，尤其是在对他们来说重要的战略地带。