[7] The British policy was not in keeping with the Congress System, which had developed after the Napoleonic Wars, and was fundamentally anti-German and even more anti-Austrian.

[8] The policy created an atmosphere in which Germany was forced into a "preventive war" to maintain Austria as an allied power.

[9] Apart from his scholarship, Schroeder was a regular contributor to the magazine The American Conservative and wrote strong critiques of the foreign policy of the George W. Bush administration, especially regarding the Iraq War, for its destabilizing counterproductive effects.

The internationalist realist perspective of his critiques fit well with his favorable appraisals of the 19th-century Concert of Europe approach to international relations that he offered as a model in his scholarship.

Perry Anderson called him "arguably the greatest living American historian" and said that his The Transformation of European Politics, 1763–1848 "revolutionised one of the most disgraced of all fields in the discipline,... diplomatic history.