Russia's defense ministry on Wednesday blamed the illegal use of mobile phones for a deadly Ukrainian missile strike that killed 89 servicemen, raising the reported death toll significantly.

Moscow previously said 63 Russian soldiers were killed in the weekend strike. The ministry's reaction came amid mounting anger among some Russian commentators, who are increasingly vocal about what they see as a halfhearted campaign in Ukraine.

Most of the anger on social media was directed at military commanders rather than Russian President Vladimir Putin.