I don't see the relevance of history and mythology to the point I was making. I am suggesting that even within the Shia framework, if we were to take it at face value, the religious ruling that the GP mentioned is non-binding because they are allowed to lie out of expediency to life or existential threats to the Islamic establishment (Taqiyya); it won't count as a sin or hypocricy within their own framework, objectively.
Saying that your enemy "plans" to do something, is never justification for mass murdering civilians. It's interesting that this is basically the same playbook Zionists are currently using. Hurl some accusations, then start killing civilians.
Haman’s plans weren’t theoretical. He had taken steps to put them into action, just like Iran has taken steps for decades in attacking Israel. Likewise, the people that were killed weren’t civilians. They were supporters of Haman. Undoubtedly, some innocent people were killed. That’s just how war works.
https://en.wikipedia.org/wiki/Purim