As the war in Ukraine enters its third year without resolution, a senior NATO commander has offered a sobering appraisal: Vladimir Putin is no longer the cautious calculator of earlier assessments, but a leader growing more willing to absorb risk and press forward regardless of cost. The warning arrives at a moment when the alliance must reckon with a fundamental question that has shadowed every great conflict — what happens when a powerful actor decides that the price of retreat exceeds the price of escalation? History suggests such moments are among the most dangerous, and NATO's leadership