Russia says that Ukrainian helicopters attacked a Russian oil storage facility inside Russia.

Morally, I see no reason why Ukraine should not do this. It is not escalation, since the Putin forces regularly attack targets in Ukraine from bases in Russia, so this is just a little bit of turnabout. That oil is surely there to be be transported into Ukraine for Putin forces vehicles.

It is natural that the powers that are arming Ukraine might be concerned that Putin might react to this by a real escalation. But he could not make the attack on Ukraine much more heinous, so no reason to worry greatly about that.

What if he reacts by bombing NATO countries? That is conceivable, but he would recognize that that is more likely to bring him great harm than any good.