Iran fights ISIS to protect a pipeline in Iraq.

Is Iran a member of the ISIS Coalition the US has put together?  If not, why not (domestic politics aside)?

The pipeline mentioned in the article below, as planned, would run from the South Pars gas field through Iran, Iraq, Syria, and Lebanon, countries not aligned with the US.
   

Iran already has an outlet in the Persian Gulf at Assaluyeh, across from the South Pars field, the largest natural gas field in the world. The Fifth Fleet, stationed in Bhrain in the Gulf, hindersIranian  shipment through the Gulf.  Presumably shipment through Syria would escape US sanctions.

________

Assaluyeh and South Pars:

he proposed Iran, Iraq, Syria pipeline

For a discussion of possible routes for the pipeline, see here.

The Epoch Times - Breaking news, independent China news

Fighting in Iraq Delays Iran Gas Exports

⋅ September 11, 2014

TEHRAN, Iran—The fighting between Iraqi troops and Islamic State militants will delay even further the planned start of Iranian natural gas exports to neighboring Iraq, Iran’s oil minister was quoted as saying Wednesday.

Oil Minister Bijan Zanganeh said the pipeline, which is still under construction on the Iraqi side, goes partly through territory now controlled by the Islamic State group.

The extremist group carried out a blitz this summer, seizing much of Iraq’s north and west and is now battling with Iraqi forces, backed by U.S. airstrikes, who are trying to take back lost ground.

Pipeline workers, mainly Iranians, have come under attack several times, especially in Iraq’s Diyala province, which has disrupted work, he said.

P.s.  From Wikipedia, the free encyclopedia  The Epoch Times originally targeted Chinese readers living abroad and reported on various abuses and inner workings of the Communist Party of China (CCP). The paper's reports on China are highly critical of the PRC government, particularly in its tone and commentaries towards the Communist Party. The paper is unique in giving significant attention to Falun Gong's campaigns, particularly their attempt to sue former Chinese President Jiang Zemin under civil legislation for genocide, which many mainstream publications have not covered.[29] As reported by the paper itself, Chinese journalists relayed stories overseas of alleged human rights abuses, infringements on civil liberties and corruption in the CCP, among others.[5]

_________

If the US and Iran reach agreement over the nuclear issue and sanctions on Iran are lifted, the whole world changes, for the better.   The pressure on the US from those who benefit from the status quo is terrific; and Obama has two more years.