This book examines Russia's military strategy in its conflict with Ukraine, analyzing how adaptation, psychological operations, and economic resilience have shaped the war's progression. Through chapters on electronic warfare, energy politics, and information campaigns, it reveals how traditional military power combines with hybrid tactics to wage modern conflict. The analysis focuses on Russia's ability to endure sanctions, exploit weaknesses in democratic systems, and turn brutality into strategic advantage, offering sobering insights into 21st-century warfare where persistence often outweighs short-term victories. By 2025, these methods demonstrated how a determined nation can leverage its resources and tolerate suffering to outlast better-equipped opponents.