Two leading authorities—an acclaimed historian and the outstanding battlefield commander and strategist of our time—collaborate on a landmark examination of war since 1945. Conflict is both a sweeping history of the evolution of warfare up to Putin’s invasion of the Ukraine, and a penetrating analysis of what we must learn from the past—and anticipate in the future—in order to navigate an increasingly perilous world.In this deep and incisive study, General David Petraeus, who