As the Islamic State in Iraq and the Levant (ISIS), and other affiliated militant groups, have been making remarkably rapid military advances across Iraq, and as Iraqi cities appear to be falling into the control of ISIS, two countries and enemies have shown great concern regarding their national interest in Iraq: the United States and Iran.
The Obama administration withdrew its forces at the end of 2011, and will be reluctant to send troops on the ground. Even if United States decided to send military assistance, the aid will take months and will not arrive anytime soon. This is precarious for the U.S., as ISIS is making stunning rapid advances.
What is the stance of the Islamic Republic? Although, President Hassan Rouhani denies that the Islamic Republic is involved in Iraq, it is unfathomable to believe that Tehran is not assisting Iraqi government forces in the crackdown on ISIS and Sunni insurgents. According to a senior security official in Iraq who spoke to CNN, the Islamic Republic has already sent approximately 500 forces from Iran's Revolutionary Guards Corps to fight alongside the Iraqi government military and security forces in Iraq's Diyala province. Qassem Suleimani, the commander of the Quds Force, is now in control of this operation and he reports directly to the supreme leader, Ayatollah Ali Khamenei.
Realistically speaking, in order to keep its political influence in Iraq and in order to maintain its ally, the Shiite-led government of Prime minister Nouri Al-Maliki, Iran is likely to ratchet up its involvement in Iraq until it makes sure that Iraq is stable.
On the path to Iran-U.S. rapprochement on the nuclear issue, currently, the rapprochement is entering into a second phase after the nuclear talks. Tehran and Washington are starting a groundbreaking military cooperation in order to halt the Sunni fighters.
This is considered a dramatic turnaround for the two rival powers, who have had frozen diplomatic relationships for decades. Both the United States and the Islamic Republic are in the scramble to strengthen and bolster the Shiite-led and beleaguered government of Nouri al-Maliki.
It is also crucial to point out that this is not the first cooperation between the U.S. and Iran. Tehran and Washington have previously cooperated on multiple occasions after 9/11 to fight with al Qaeda.
The Enemy of My Enemy Is My Friend
In a rare occasion, the United States and the Islamic Republic have become two odd bedfellows. The reason is that both Tehran and Washington share one common goal to serve their own national interests: a stable Iraq and keeping the oil to flow. Hamid Aboutalebi, Iranian President Hassan Rouhani's deputy chief of staff for political affairs, tweeted recently that Washington and Tehran are the only two countries that can stabilize Iraq.
In the last two weeks, the Obama administration has been desperate to chart a way to halt the military advancement of ISIS, to crack down on this movement and to regain the territories. But the United States is not willing to send troops on the ground as it did in the 2003 U.S. invasion of Iraq. As a result, what is the best resolution? Cooperating with the Islamic Republic.
The United States needs troops on the ground as well as intelligence. America will likely use air strikes while boosting its advancement by the assistance of Iran's Revolutionary Guards' offensives on the ground and the help of Iran's intelligence -- a win-win scenario for both Tehran and Washington.
In Washington, both Democrats and Republican senators have desperately demanded the White House cooperate with the Islamic Republic to defeat ISIS. The United States has already delegated its top deputy secretary of state, William Burns to meet Iranian Foreign Minister Mohammad Javad Zarif in Vienna.
But the United States is cautious about raising the concerns of other Arab countries in the region as well as the Sunni Iraqis. In addition, the Islamic Republic is making calculated remarks to not depict itself as a country that interferes in the domestic affairs of another Arab country.
Currently, the political and economic interests between the Islamic Republic, the United States and the government of Prime Minister Nouri al-Maliki seem to seamlessly align.
Military coordination between the two adversaries: Iran's socio-political and socio-economic leverage over Iraq.
In other words, the two enemies, the United States and the Islamic Republic, share significant national, strategic, and geopolitical interests in defending the Iraqi government and the status quo.
The Islamic Republic is currently considered to be the most influential foreign force in Iraq, after the withdrawal of U.S. forces from Iraq. It is critical to point out that the current Iranian influence in Baghdad is only through militaristic, security-linked and political dimensions. Iran's considerable amount of influence over Iraq also derives from social, economic, and religious realms as well as political and security frameworks
President Hassan Rouhani is a realist and pragmatist. His remarks showing willingness to cooperate with the United States are a manifestation of this character.
Moreover, this is not the first time that the Islamic Republic is assisting the Iraqi government to subdue Sunni insurgents or other oppositions. Iranian senior officers have frequently offered assistance to Iraq's central government in the fighting of Sunni insurgents.
Iran has close security, political and intelligence ties with other powerful and influential Shiite groups including the Islamic Supreme Council of Iraq (ISCI) and the followers of Muqtada al-Sadr's group as well.
With the new announcements this week from Secretary of the State John Kerry and the White House, declaring that the United States is willing to cooperate with the Islamic Republic, Iran receives a green light and the legitimacy needed. Instead of secretive operations and assistances carried out by the Islamic Republic, the nation can now use the full-scale force of IRGC, its intelligence and the Quds forces to fight alongside Iraqi government forces and defeat ISIS.
Previously, the significant relationship between Iran's elite Revolutionary Guards Quds force and the Maliki government was kept secretive in order to project the picture that Iran is not publicly interfering and intervening in the affairs of other Arab countries in addition to Syria.
Second, Rouhani's government was and still is attempting to send a message to other regional powers that Iran is not pursuing a sectarian foreign policy agenda in Iraq, despite the fact that Tehran's policies on Iraq have so far been sectarian.
Finally, the military cooperation between the Islamic Republic and United States will boost Iran's hegemonic power, domestically and regionally. In addition, the Islamic Republic will be capable of manifesting its regional power by depicting the picture that United States is dependent on the Iran in the region.
Majid Rafizadeh, an American scholar and political scientist, is president of the International American Council on the Middle East. He is originally from the Islamic Republic of Iran and Syria.
This post first appeared on Al Arabiya.