In February, Russia invaded Ukraine, upending decades of geopolitical and security assumptions in Europe and setting off a deadly and tragic war—with consequences not only in Kyiv and Moscow, but across the West. In the months since, the war has proved brutal and cruel; it has also consolidated Ukrainian identity and resolve, and led to a new set of policy assumptions and priorities among Western governments. Throughout, Joshua Yaffa, who spent a decade living and reporting in Russia, traveled across Ukraine—where he has also deep experience as a journalist—witnessing the war up close. Can Ukraine win the war? What sort of country will emerge in its wake? And what can the world expect of Putin’s Russia?