The idea behind giving them weapons was that they would be defensive in nature.
These targets are on Ukrainian territory.
In the meantime the Russians are free to bomb all Ukrainian territory. Go figure.
It is pretty defensive to destroy millitary equipment which is being used against you.
If they were going after Russian civilian centers... it would be a different matter.
The whole war is being waged with kid gloves because Russia has a lot of nuclear weapons.
I would not be surprised to see Ukraine build their own nukes to balance Russia's nukes.
Berdyansk and Luhansk are in Ukraine.
If the Russians would just keep their helicopters in Russia they'd quit getting blown up.