In the twenty-first century, war is waged not only on battlefields but in brains. Since the full-scale invasion of Ukraine in 2022, the Kremlin has invested heavily in a campaign not merely to suppress dissent, but to redefine reality for the Russian people. At the heart of this effort is a battle for psychological supremacy: a struggle between truth and narrative, between fact and manipulation, between free thought and internalised propaganda.Here we explore how the Russian state deploys misinf