NEC-SE has stated during multiple interviews that Iran has expanded its footprint within the region to the point that it may not need an agreement on the Nuclear Deal to establish its regional hegemony claims in the future. Iran’s ability to influence the region through Civil Military Operations and direct security engagements has allowed it to become the ascending force in the region.
http://www.businessinsider.com/iran-is-building-a-force-in-iraq-that-baghdad-cant-control-2015-7