Our government demonizes Iran and other Shiite countries because of their hatred for Israel but it's not the Shiites that are attacking Western nations with terror attacks, it's extremist Sunni groups. We shouldn't be allied with any of these countries. More likely than not they are covertly providing material support to the terrorists. These extremist sunni groups would not exist without at least the tacit approval of the Sunni States, particularly the largest one, Saudi Arabia.