In this short, urgent and indispensable book, Robin Niblett argues that only by looking back can we heed the warnings and learn the necessary lessons to guide us through this new reality: he goes through the ten ways in which the new Cold War is different, and offers five new rules for navigating it. How we manage this contest will determine not only whether there is still space for international cooperation to deal with our many global challenges, from the climate emergency to the technological revolution, but also who gets to dominate the 21st century and, quite simply, the course of all our futures.