Claiming Baghdad as IRAN's Capital

"Ali Younesi, a senior advisor to Iranian President Rouhani and former Intelligence Minister during Khatemi’s tenure, has provided a stunning example of Iran’s  hegemonic self-perception, growing confidence and power projection: “Iran today has become an empire as it was throughout history and its capital now is Baghdad, which is the center of our civilization and our culture and identity today as it was in the past…We will defend all the peoples of the region, because we consider them as part of Iran. We will fight Islamic extremism, Takfiris (apostates), atheists, neo-Ottomans, Wahhabists, the West and Zionism.” Referring to current IRGC operations in Iraq, he added that “Iran and Iraq are geographically indivisible and the culture cannot be dismantled, so you either have to fight together or unite.”- See more HERE

While hardly an official government statement (lots of crazy statements are made by individuals, and maybe there is a good reason he is no longer the Intelligence Minister) this statement may be a sign of Iran's imperialist intentions.  If so they will likely battle ISIS - which also views itself as the dominant empire in Iraq.