that either didn't make sense or I was not clear in what I was asking for. please read Reply #43 and try again before I rephrase.
If, in your scenario, there was an Iranian airstrike/invasion of US/Israel territory as the first action, I'd obviously see Iran as the aggressors. But then if the US/Israel opted for a nuclear retaliation, that would be a scenario in which - despite Iran starting the war - I'd then classify them as the aggressors.
If you're asking a different question, you'll have to rephrase.