ISIS militants lay siege to Iraq's biggest oil refinery that accounts for 25% of country's refining capacity

Baghdad: Islamic militants laid siege to Iraq’s largest oil refinery Wednesday, threatening a facility key to the country’s domestic supplies as part of their ongoing lightning offensive, a top security official said.

The attack comes militants have seized wide swaths of territory in Iraq - and as the spectre of the sectarian warfare that nearly tore the country apart and the doubts that followed the 2003 U.S.-led invasion now haunt those trying decide how to respond.

The official said fighters of the al-Qaida-inspired Islamic State of Iraq and the Levant began their attack on the Beiji refinery, some 250 kilometers (155 miles) north of the capital, Baghdad, late Tuesday night. The attack continued into Wednesday morning, with fighters targeting it with mortar shells. A small fire started on the facility’s periphery, he said.

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The official spoke on condition of anonymity because he was not authorized to speak to journalists.

The Beiji refinery accounts for a little more than a quarter of the country’s entire refining capacity - all of which goes toward domestic consumption for things like gasoline, cooking oil and fuel for power stations. At the height of the insurgency from 2004 to late 2007, the Beiji refinery was under the control of Sunni militants who used to siphon off crude and petroleum products to finance their operations.

Any lengthy outage at Beiji risks long lines at the gas pump and electricity shortages, adding to the chaos already facing Iraq.

Farther north in the city of Tal Afar, fighting raged Wednesday between government troops and Islamic State fighters who captured the city on Monday, chief military spokesman Lt. Gen. Qassim al-Moussawi told The Associated Press.

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He had no other details, but state television late on Tuesday aired footage of army troops and armed volunteers disembarking from a transport C-130 aircraft at an airstrip near Ta Afar.

Tal Afar is close to the Syria border and its capture strengthens the Islamic State’s plan to carve out an “Islamic emirate” that covers territory on both sides of the territory.

The Sunni militants of the Islamic State have vowed to march to Baghdad and the Shiite holy cities of Karbala and Najaf in the worst threat to Iraq’s stability since U.S. troops left. The three cities are home to some of the most revered Shiite shrines. The Islamic State also has tried to capture Samarra north of Baghdad, home to another major Shiite shrine.

Iran, a neighboring Shiite powerhouse, already has seen thousands volunteer to defend the shrines. Iranian President Hassan Rouhani, speaking Wednesday to a crowd gathered at a stadium near his country’s border with Iraq, said that the Islamic State and others would be defeated.

“We declare to all superpowers, their mercenaries, murderers and terrorists that the great Iranian nation will not miss any effort in protecting these sacred sites,” Rouhani said.

Some 275 armed American forces are being positioned in and around Iraq to help secure U.S. assets as President Barack Obama also considers an array of options for combating the Islamic militants, including airstrikes or a contingent of special forces.

The White House has continued to emphasize that any military engagement remains contingent on the government in Baghdad enacting political reforms and ending sectarian tensions, which had been on the rise even before the Islamic State’s incursion last week, with thousands killed since late last year.

Republicans have been critical of Obama’s handling of Iraq, but Congress remains deeply divided over what steps the US can take militarily. Even lawmakers who voted in 2002 to give President George W. Bush the authority to use military force to oust Saddam Hussein have expressed doubts about the effectiveness of drone airstrikes and worry about Americans returning to the fight in a country split by sectarian violence.

“Where will it lead and will that be the beginning or the end?” Sen. Richard Shelby, R-Ala., said, when asked about possible U.S. airstrikes. “We don’t know that. This underlying conflict has been going on 1,500 years between the Shias and the Sunnis and their allies. And I think whatever we do, it’s not going to go away.”

During the United States’ eight-year presence in Iraq, American forces acted as a buffer between the two Islamic sects, albeit with limited success. But U.S. forces fully withdrew at the end of 2011 when Washington and Baghdad could not reach an agreement to extend the American military presence there.

Iraq has the world’s fifth-largest known crude oil reserves, with an estimated 143 billion barrels, according to the U.S. Energy Information Administration. It produced some 2.58 million barrels of oil day in May, according to the Oil Ministry.

The price of oil eased slightly Tuesday after the U.S. said it was deploying a small group of troops to Iraq, which helped soothe fears somewhat over the prospect of disruption to crude supplies. The attack on Beiji likely will affect trading Wednesday.

AP