They used to say "what if they had a war and nobody came?" A nice thought. Almost as good: "what if they had a war nobody got hurt?"
That isn't the usually the case.
Whatever we think of Putin, there has been a concerted effort not to hurt locals, and Ukrainians have also been restrained in their response. The only missiles have been rhetoric.
In the case of Gaza, it's not so rosy. There is no doubt that Islamic Jihad was trying to kill civilians when they sent a barrage of rockets into southern Israel yesterday. We had reason to fear that not only would there be casualties, but that Israeli retaliation against Gaza would result in civilian deaths in that densely populated enclave. Had that been the case, the terror organizations would certainly manipulate the situation, decrying "disproportionate response" and blitzing the media with pictures of the dead. "Human rights" organizations, eager for contributions, could be counted upon to turn tragedy into opportunity, appealing to well meaning subscribers who eagarly identify with the perceived "underdog." The implication would be that muderous Israelis were deliberately trying to kill civilians - ignoring that missle batteries were placed in civilian centers. No thought that even the most callous of Israeli commanders would risk court marshal nor that the most cynical of Israeli governments would relish the bad press. (Not that Israelis are quite the monsters that Islamic Jihad wants to believe.)
Fortunately the "asymmetry of power" worked in Israel's interest. The Islamic Jihad can't shoot straight and the Israelis can. Terror targets were destroyed with no one being hurt whatsoever.