The rise of four powerful democracies – Brazil, India, Indonesia and Turkey – could bolster today’s international order. Yet this outcome is far from assured. The degree to which the four “global swing states,” as this project calls them, will defend and reform the international order remains uncertain. If they do, their rise presents an enormous opportunity for the United States and its European allies. If they do not, they, the United States, and countries across the globe will suffer the consequences.