Okay, let me explain more clearly:
What I was trying to discuss were the rules of counducting war. Among the traditional and almost universally agreed-upon ones are not using poison gas, not killing prisoners and emissaries, not indulging in cruelty that has no military effect etc. These rules are
independent of who started the war, who fired the first shot, who's right and who's wrong, who's better equipped and who's the underdog. Nowadays war can be waged by non-state actors - such as Hezbollah - as opposed to sovereign nation states, and the present rules of warfare are insufficient to regulate these conflicts. If we want international law to continue mattering, we need to change this.
At no point have I made any statement about who's right and who's wrong in the Israel-Hezbollah conflict, nor have I claimed that any of the two parties has the 'right' to attack the other. I'm actually trying very hard not to discuss Middle Eastern politics here - I'd appreciate if you joined in the effort, because these derails usually end like most violent conflicts in the region: With a lot of pain and no actual change.
But, the big question is why we are choosing who is in the "right". Israel are Hezbollah's enemies just as Hezbollah are Israel's enemy. By the original logic, both have the right to attack each other. Some people count bombing campaigns as terrorism too. But, they're just not referred to as such because the perpetrators are state actors. Same thing, just you've got a badge which makes it OK. Israel has bombed Lebanon much more than the reverse.
Precisely! This is why we need to update our definition of 'war', along with the rules for conducting military operations. Ultimately I believe that we need to treat the troops of non-state actors the same way legally that we treat the troops of sovereign states, since in the field there is no difference between the two.
Edit: If we're gonna talk about UN resolution: Have you ever compared the number of resolutions (successful and failed) against Israel to that against pretty much any state except maybe for North Korea? You should, it's very educational.