Cut the crap! There are no innocents here. But if you help invade and wage war on another country for 8 years, and continue your nasty racist and religious rhetoric against them, claim pieces of their territory, angle yourself against them at every turn, ask your protector to knock them down and then walk by whistling in the wind as if nothing has happened, then I will tell you there is something wrong with your head. As the saying goes, what will you do with the smell?
Iran is relatively safer today, precisely because of the actions it has taken against the crazy Arabs. Imagine what would happen if they came to power in Iraq? So yes Iran should whatever it can to put them in check in Iraq and Syria and Yemen too, if possible, until the crazy Arabs are liquidated or they learn the cost of not playing nice....