Thirty years after the end of the Cold War, world peace is at risk again. The President of the United States has withdrawn from the disarmament treaty with Russia, Europe is disintegrating, China is surging forward and a wave of nationalism and populism is destabilizing established political institutions and endangering hard-won liberties. In view of this dangerous and unpredictable state of affairs, Mikhail Gorbachev, the last great statesman of the 1989 revolution, has written this short book to warn us of the grave risks we now face and to urge us all, political leaders and citizens alike, to take action to address them. He focusses on the big challenges of our time, such as the renewal of the arms race and the growing risks of nuclear war, the new tension between Russia and the West, the global environmental crisis, the rise of populism and the decline of democracy. He argues that self-serving policies and narrow-minded politics aimed at the pursuit of national interests are taking the place of political principles and overshadowing the vision of a free and just world for all peoples. He offers his view of where Russia is heading and he urges political leaders in the West to recognize that re-establishing trust between Russia and the West requires the courage of true leadership and a commitment to genuine dialogue and understanding on both sides. This succinct account of the immense challenges we now face by one of the world's greatest statesmen will be of interest to everyone concerned about the current state of the world and its future.