During the years 1919-1920, President Woodrow Wilson unsuccessfully struggled to persuade the Senate to ratify the Treaty of Versailles and thereby bring the United States into the newly created League of Nations. In considering the defeat of the treaty in the Senate, historical attention is usually directed toward Wilson and his ardent opposition, Republican Majority Leader Henry Cabot Lodge and the irreconcilables. Such studies tend to neglect the mild reservationists, ten Republican senators who played a prominent part during this decisive period.

The United States has looked inward throughout most of its history, preferring to avoid "foreign entanglements," as George Washington famously advised. After World War II, however, Americans became more inclined to break with the past and take a prominent place on the world stage. Much has been written about the influential figures who stood at the center of this transformation, but remarkably little attention has been paid to Arthur H. Vandenberg (1884--1951), who played a crucial role in moving the nation from its isolationist past to an internationalist future. Vandenberg served as a U.S. senator from Michigan from 1928 to 1951 and was known in his early career for his fervent anti-interventionism. After 1945, he became heavily involved in the establishment of the United Nations and was a key player in the development of NATO. As chairman of the Senate Foreign Relations Committee during 1947 and 1948, Vandenberg helped rally support for President Truman's foreign policy -- including the Marshall Plan -- and his leadership contributed to a short-lived era of congressional bipartisanship regarding international relations. In The Conversion of Senator Arthur H. Vandenberg, Lawrence S. Kaplan offers the first critical biography of the distinguished statesman. He demonstrates how Vandenberg's story provides a window on the political and cultural changes taking place in America as the country assumed a radically different role in the world, and makes a seminal contribution to the history of U.S. foreign policy during the initial years of the Cold War.

A close look at Woodrow Wilson’s political thought and international diplomacy In the widely acclaimed To End All Wars, Thomas Knock provides an intriguing, often provocative narrative of Woodrow Wilson’s epic quest for a new world order. This book follows Wilson’s thought and diplomacy from his policy toward revolutionary Mexico, through his dramatic call for “Peace without Victory” in World War I, to the Senate’s rejection of the League of Nations. Throughout, Knock reinterprets the origins of internationalism in American politics, sweeping away the view that isolationism was the cause of Wilson’s failure and revealing the role of competing visions of internationalism—conservative and progressive.

Republican foreign policy and the conservative leaders who shaped it Hard Line traces the history of Republican Party foreign policy since World War II by focusing on the conservative leaders who shaped it. Colin Dueck closely examines the political careers and foreign-policy legacies of Robert Taft, Dwight Eisenhower, Barry Goldwater, Richard Nixon, Henry Kissinger, Ronald Reagan, George H. W. Bush, and George W. Bush. He shows how Republicans shifted away from isolationism in the years leading up to World War II and oscillated between realism and idealism during and after the cold war. Yet despite these changes, Dueck argues, conservative foreign policy has been characterized by a hawkish and intense American nationalism, and presidential leadership has been the driving force behind it. What does the future hold for Republican foreign policy? Hard Line demonstrates that the answer depends on who becomes the next Republican president. Dueck challenges the popular notion that Republican foreign policy today is beholden to economic interests or neoconservative intellectuals. He shows how Republican presidents have been granted remarkably wide leeway to define their party's foreign policy in the past, and how the future of conservative foreign policy will depend on whether the next Republican president exercises the prudence, pragmatism, and care needed to implement hawkish foreign policies skillfully and successfully. Hard Line reveals how most Republican presidents since World War II have done just that, and how their accomplishments can help guide future conservative presidents.

This book offers a major rereading of US foreign policy from Thomas Jefferson's purchase of Louisiana expanse to the Korean War. This period of one hundred and fifty years saw the expansion of the United States from fragile republic to transcontinental giant. David Mayers explores the dissenting voices which accompanied this dramatic ascent, focusing on dissenters within the political and military establishment and on the recurrent patterns of dissent that have transcended particular policies and crises. The most stubborn of these sprang from anxiety over the material and political costs of empire while other strands of dissent have been rooted in ideas of exigent justice, realpolitik, and moral duties existing beyond borders. Such dissent is evident again in the contemporary world when the US occupies the position of preeminent global power. Professor Mayers's study reminds us that America's path to power was not as straightforward as it might now seem.