By extending to regions beyond Ukraine, they ensured that more of Russia's population, already chastened by a partial mobilisation announced last month, would feel the consequences of the war in their own lives.
The published Kremlin decree ordered an "economic mobilisation" in eight regions adjoining Ukraine, including Crimea, which Russia invaded and annexed in 2014, and said movement in and out of the regions would be restricted.
Putin said he was conferring additional powers on the leaders of all Russia's 80-plus regions to protect critical facilities, maintain public order and increase production in support of Moscow's "special military operation".
The measures came on the same day that Russian-installed officials in Kherson, one of the four occupied regions, told civilians to leave some areas as soon as possible in anticipation of an imminent Ukrainian attack.