Russia is targeting cities and civil targets, employing bombs that have been banned (cluster bombs), and committing war crimes, I don't think they currently give a damn about the Olympic Truce.
Just to correct a minor mistake: cluster bombs are not "banned", there's a treaty signed by some countries which prohibits them, but many countries are not part of that treaty, incl. Russia, Ukraine, Poland and USA for that matter.
But you're right that their use against cities full of civilians is wrong, very likely a war crime.
While Russia is committing war crimes, they have not used cluster bombs. AFAIK this claim is based on a report that they were deploying cluster bombs against a civilian mall in Kharkiv. The video shows rapid explosions falling on the mall, but not as rapidly as one would expect to see if cluster bombs were used. Most likely it was Grad (MRLS) missiles. Still likely to be a war crime, but not cluster bombs.
Your comment inspired me to search harder, and I found what I believe to be credible evidence that some of the MRLS missiles targeted at Kharkiv contained cluster munitions. I would retract my above comment.
