Historically speaking I think it's clear Iran has been the aggressor in this specific conflict.
Not that I think Israel took smart actions, but that's a different matter.
The Israel - Iran proxy war is happening on/in Israel's borders, it's way more "direct", and not happening in some far away land.
Could you imagine if a Chinese proxy attacked the US directly?
Historically speaking I think it's clear Iran has been the aggressor in this specific conflict.
Not that I think Israel took smart actions, but that's a different matter.