“Labeiki ya Zaynab,” chanted Iraqi Shia fighters as they swayed, dancing with their rifles before TV news cameras in Baghdad 13 June. They were apparently getting ready for a difficult fight ahead. For them, it seemed that a suitable war chant would be answering the call of Zaynab, the daughter of Imam Ali, the great Muslim caliph who lived in Medina 14 centuries ago. That was the period through which the Shia sect slowly emerged, based on a political dispute whose consequences are still felt until this day. That chant alone is enough to demonstrate the ugly sectarian nature of the war in Iraq, which has reached an unprecedented highpoint in recent days. Fewer than 1,000 fighters from the Islamic State of Iraq and Syria (ISIS) advanced against Iraq's second largest city of Mosul 10 June, sending two Iraqi army divisions (nearly 30,000 soldiers) into a chaotic retreat. The call to arms was made in a statement issued by Iraq's most revered Shia cleric, Grand Ayatollah Ali Al-Sistani, and read on his behalf during a Friday prayer sermon in Kerbala. “People who are capable of carrying arms and fighting the terrorists in defense of their country, should volunteer to join the security forces to achieve this sacred goal,” the statement read in part. The terrorists of whom Al-Sistani speaks are those of ISIS, whose numbers throughout the region is estimated to be at only 7,000 fighters. They are well organised, fairly well equipped and absolutely ruthless in their conduct. To secure their remarkable territorial gains, they quickly moved south, closing in on other Iraqi towns. They attacked and took over Baiji on 11 June. On the same day, they conquered Tikrit, the town of former Iraqi president Saddam Hussein, where they were joined by ex-Baathist fighters. For two days, they tried to take over Samarra, but couldn't, only to move against Jalawala and Saaddiyah, to the east of Baghdad. It is impossible to verify reports of what is taking place in towns that fall under the control of ISIS, but considering their notoriously bloody legacy in Syria, and ISIS's own online reporting on their own activities, one can expect the worst. Within days, ISIS was in control of a large swathe of land that lumped together, offers a new map fully altering the political boundaries of the Middle East that were largely envisioned by colonial powers France and Britain nearly a century ago. What the future holds is difficult to predict. The US administration is petrified by the notion of getting involved in Iraq once again. It was its original meddling, at the behest of the notorious neoconservatives who largely determined US foreign policy during George W Bush's administration that ignited this ongoing strife in the first place. They admitted failure and withdrew in December 2011, hoping to sustain a level of influence over the Iraqi government under Shia Prime Minister Nouri Al-Maliki. They failed miserably and it is now Iran that is the influential foreign power in Baghdad. In fact, Iran's influence and interests are so strong that despite much sabre-rattling by US President Barack Obama, the US cannot possibly modify the massively changing reality in Iraq without Iranian help. Reports in US and British media are pointing to possible US-Iranian involvement to counter ISIS, not just in Iraq, but also in Syria. History is accelerating at a frantic speed. Seemingly impossible alliances are being hastily formed. Maps are being redrawn in directions that are determined by masked fighters with automatic weapons mounted on the back of pickup trucks. True, no one could have predicted such events, but when some warned that the Iraq War would “destabilise” the Middle East for many years to come, this is precisely what they meant. When Bush led his war on Iraq in order to fight Al-Qaeda, the group simply didn't exist in that country; the war however, brought Al-Qaeda to Iraq. A mix of hubris and ignorance of the facts — and lack of understanding of Iraq's history — allowed the Bush administration to sustain that horrible war. Hundreds of thousands of Iraqis perished in an immoral military quest. Those who were not killed, were maimed, tortured, raped or fled into a borderless Iraqi odyssey. The Americans toyed with Iraq in numerous ways. They dissolved the army, dismissed all government institutions, attempted to structure a new society based on the recommendations of Pentagon and CIA analysts in Washington DC and Virginia. They oppressed Sunni Muslims, empowered Shia, and fed the flame of sectarianism with no regard for the consequences. When things didn't go as planned, they tried to empower some Shia groups over others, and armed some Sunni groups to fight the Iraqi resistance to the war, which was mostly made of Sunni fighters. And the consequences were most bloody. Iraq's Civil War of 2006-07 claimed tens of thousands to be added to the ever-growing toll caused by the war adventure. No sham elections were enough to remedy the situation, no torture technique was enough to suppress the rebellion, and no fiddling with the sectarian or ethnic demographics of the country was enough to create the coveted “stability”. In December 2011, the Americans ran away from the Iraq inferno, leaving behind a fight that was not yet settled. What is going on in Iraq right now is an integral part of the US-infused mayhem. It should be telling enough that the leader of ISIS, Abu Bakr Al-Baghdadi, is an Iraqi from Samarra who fought against the Americans and was himself held and tortured in the largest US prison in Iraq, Camp Bucca, for five years. It would not be precise to make the claim that ISIS started in the dungeon of a US prison in Iraq. The ISIS story would need to be examined in greater depth since it is as stretched as the current geography of the conflict and as mysterious as the masked characters who are blowing people up with no mercy and beheading with no regard for the upright values of the religion they purport to represent. But there can be no denial that the ignorant US orchestration of mass oppression of Iraqis, and Sunnis in particular, during the 2003 war until their much-touted withdrawal, was a major factor in ISIS's formation and the horrendous levels of violence the extremist group utilises. It is unclear whether ISIS will be able to hold onto the territories it gained or sustain itself in a battle that involves Shia-controlled Baghdad, Iran and the US. But a few things should be clear: The systematic political marginalisation of Iraq's Sunni communities is both senseless and unsustainable. A new political and social contract is needed to reorder the mess created by the US invasion, and other foreign intervention in Iraq, including that of Iran. The nature of the conflict has become so convoluted that a political settlement in Iraq would have to tackle a similar settlement in Syria, which is serving as a breeding ground for brutality, by both the Syrian regime and opposition forces — especially ISIS. That factory of radicalisation must close down as soon as possible in a way that would allow Syria's wounds — and by extension Iraq's — to heal. The writer is managing editor of Middle East Eye.