“This murder of people who had gathered at a mosque to pray is staggering in its cruelty and cynicism,” Mr. Putin wrote in a statement posted on the Kremlin website.   
How should a senior government office respond to this hypocrite?  I suppose they can acknowledge that it was a cruel act.  Yes.  Think about  the number of people put to death under the cruel regime of President Putin, or whatever he calls himself at this time.  Here is an example from a few years ago:  remembering an unfortunate Russian reporter whom Putin had poisoned and whom had to suffer in a London hospital for weeks because there was no cure.  He died suffering horribly.