Union Now is a book by journalist Clarence Streit calling for a federal union of fifteen of the world's major democracies. The first edition of the book was published in 1939. The book attracted public attention to world federalist and Atlanticist ideas and helped lay the groundwork for the efforts of Streit's organization Federal Union, Inc. (which later became the Association to Unite the Democracies).
As a New York Times correspondent at the League of Nations, Streit was disturbed by the democracies' apparent inability to deal with such crises as the Japanese invasion of Manchuria and the rise of Nazism. He came to the conclusion that at the root of the League's problems were nationalism and the democracies' ignorance of their own share of the world's economic and military power. Streit began work on his proposal for a union of democracies in 1933. In 1938, with world war appearing increasingly likely, the book was accepted for publication by Harper & Broth