This is a bad idea on Putin’s part. Israel has nuclear weapons and the ability to deliver them on target.
Some years ago I read about an Israeli policy/strategy/plan called ‘MASADA’.
Basically the policy is if the existence of Israel is in question then they will use everything they have to inflict the maximum amount of death and destruction on their enemies...even if that costs them their national existence.
Seriously, when those folks say ‘Never Again’ they friggin’ mean it!
An especially bad idea now that it is becoming apparent Russia has run out of smart bombs in the Ukraine.