Alfred Thayer Mahan (1840-1914) combined a distinguished career in the U.S. Navy with the authorship of twenty books and 137 essays on naval history and strategy and international relations. He served as president of the Naval War College and as an informal advisor to President Theodore Roosevelt. Francis P. Sempa is the author of Geopolitics: From the Cold War to the 21st Century, and has written articles on international relations for Strategic Review, The National Interest, and National Review. He is an Assistant United States Attorney for the Middle District of Pennsylvania and an adjunct professor of political science at Wilkes University.

• 1: The Origin and Character of Present International Groupings in Europe; 2: The Present Predominance of Germany in Europe—Its Foundations and Tendencies; 3: Relations between the East and the West; 4: The Open Door