If the worst threatened-a rogue nuclear state with a horrible surprise, a global health crisis, the collapse of financial institutions from New York to Shanghai and Mumbai-where would the world look for leadership? For the first time in seven decades, there is no single power or alliance of powers ready to take on the challenges of global leadership. A generation ago, the United States, Europe, and Japan were the world's powerhouses, the free-market democracies that propelled the global economy forward. Today, they struggle just to find their footing. Acclaimed geopolitical analyst Ian Bremmer argues that the world is facing a leadership vacuum. The diverse political and economic values of the G20 have produced global gridlock. Now that so many challenges transcend borders-from the stability of the global economy and climate change to cyber-attacks, terrorism, and the security of food and water-the need for international cooperation has never been greater. Every Nation for Itselfoffers essential insights for anyone attempting to navigate the new global playing field.