When and how should we start counting? 1953 coup, supporting of repressive regime, naval bombardment of Lebanon, supporting Iraq in Iran-Iraq war, downing of a

When and how should we start counting? 1953 coup, supporting of repressive regime, naval bombardment of Lebanon, supporting Iraq in Iran-Iraq war, downing of a civilian airliner, are all grievances Iran has against USA. US should disengage from that part of the world, it only brings more chaos as misery.