As this article suggests, Iran’s support for Shi’a groups in the region has deepened since the Arab Spring. There are signs that it is starting to reach out to its Sunni neighbors in an effort to re-balance its foreign policy. This is in part a function of the Rouhani government and also because it is in a strong enough position to seek accommodations on good terms. Nevertheless, it is not clear that the region has settled enough to let this happen. Iran may feel secure enough to compromise at this point, but do its Sunni neighbors?
http://www.thenational.ae/opinion/tehran-may-be-planning-a-foreign-policy-reversal#full