The Wagner group mutiny three weeks ago has exposed dissension and fueled a shake-up in the Russian military, as it tries to fend off a Ukrainian advance.
The Russian military still suffers from poor communication, coordination and leadership, but most of all, analysts say, from a morale-sapping lack of accountability.
Neither Vladimir V. Putin nor the leader of the Wagner mercenary group made public appearances on Sunday, a day after an armed rebellion shook the nation.