Neil Lanctot examines the May 7, 1915, sinking of the Lusitania by a German submarine, which killed over 100 Americans and sparked a massive crisis for American progressivism. Wilson's advisor, Colonel House, urged severing ties with Germany—a move that typically signaled war—but Wilson resisted, famously declaring that a nation could be "too proud to fight." This restraint infuriated TR, who was simultaneously fighting a high-stakes libel trial against Republican boss William Barnes. TR argued that losing national self-respect was worse than war, though he acknowledged the U.S. was militarily unprepared. Internal administration tension peaked when Secretary of State William Jennings Bryan, a staunch pacifist and ally of Addams, resigned in protest, believing Wilson's diplomatic notes to Germany were too provocative. During this turmoil, the newly married Edith Bolling Wilson began asserting her influence, successfully maneuvering to diminish Colonel House's role by sowing doubt about his loyalty in Wilson's mind. (3)