His studies of the Peloponnesian War and his impassioned teaching style inspired generations of scholars, as well as Washington strategists.His studies of the Peloponnesian War and his impassioned teaching style inspired generations of scholars, as well as Washington strategists.Read MoreKagan, Donald (1932-2021), Deaths (Obituaries), History (Academic Subject), Greek Civilization, Books and Literature, Yale University, United States International Relations, United States Politics and Government, Humanities, On the Origins of War and the Preservation of Peace (Book), internal-storyline-no