A hundred years ago, soon after winning reelection on the campaign slogan “He kept us out of war,” President Woodrow Wilson called on the U.S. Congress to authorize “a war to end all wars.” The U.S. entry into World War I abruptly ended a different campaign to end war. Between the onset of hostilities in Europe in July 1914 and the U.S. declaration of war in April 1917, a determined group of women activists lobbied