The United States is entering an era of long-term great-power competition with China and Russia. Such global struggles happen at a geopolitical twilight, between the sunshine of peace and the darkness of war. In this innovative and illuminating book, Hal Brands, a leading historian and former Pentagon adviser, argues that America should look to the history of the Cold War for lessons in how to succeed in great-power rivalry today.0 Although dangerous authoritarian powers are challenging U.S. influence, America's muscle memory for dealing with powerful foes has atrophied in the thirty years since the Cold War ended. In long-term competitions where the diplomatic jockeying is intense and the threat of violence is omnipresent, the United States will need all the historical insight it can get. Exploring how America won a previous twilight struggle is the starting point for determining how America can master another persistent high-stakes rivalry today