Russian President Vladimir Putin has landed in an unenviable position. His country has the resources to inflict damage on Ukraine in perpetuity. But because the first phase of the war has been so costly for Russia and because Ukraine’s military is mounting such stiff resistance, Russia faces serious difficulty achieving anything meaningful on the battlefield without committing much more manpower than it currently has available.

If Putin decides to mobilize, he will be altering the deal he’s made with the public and potentially destabilizing his regime.