Lieven’s métier is as a thinker of politics and international relations. He has a wide-ranging vision. As he tells us in several places in the book, he has reported from across post-Soviet Russia, Washington, DC, Pakistan and the Middle East. He is clearly stirred by the climate emergency. But this book is not really about global warming. Nor is it about energy policy, though Lieven does have strong opinions on the nuclear question. For Lieven the climate crisis serves as a diagnostic test. It poses the question of who we are in political terms.