To President Vladimir V. Putin of Russia, appointing a new defense minister provides a new building block toward fighting a long war.
That was evident in Moscow on Monday when Andrei R. Belousov, the economist who was Mr. Putin’s surprise pick to lead Russia’s sprawling defense ministry, made his first public appearance in his new role and spoke about bureaucracy rather than the battlefield.
The pick reflects an acknowledgment that the military production that is supplying Russia’s war, and heating its economy, must be carefully managed to sustain a war of attrition with Ukraine. In…


