'A human catastrophe is unfolding in Fallujah'

REUTERS/Alaa Al-Marjani

Islamic State fighters halted an Iraqi army assault on the city of Fallujah with a counterattack at its southern gates on Tuesday, while the United Nations warned of peril for civilians trapped in the city and used by militants as human shields.

The Iraqi army's assault on Fallujah has begun what is expected to be one of the biggest battles ever fought against Islamic State, the militant group also known as ISIS, ISIL or Daesh. The government, backed by world powers including the US and Iran, is determined to win back the first major Iraqi city that fell to the group in 2014.

A week after Baghdad announced the start of the assault, its troops advanced in large numbers into the city limits for the first time Monday, pouring into rural territory on its southern outskirts but stopping short of the main built-up area.

Baghdad describes the assault to retake the city as a potential turning point in its US-backed campaign to defeat the ultra-hardline Sunni Muslim militants who rule a self-proclaimed caliphate across much of Iraq and Syria.

Fallujah, where US troops fought the biggest battles of their own 2003-2011 occupation against Islamic State's precursors, is the militants' closest bastion to Baghdad, believed to be the base from which they have waged a campaign of suicide bombings on the capital less than an hour's drive away.

Retaking it would give the government control of the main population centers in the fertile Euphrates River valley west of the capital for the first time in more than two years.

But the assault is also a test of the army's ability to capture territory while protecting civilians. Though most of Fallujah's population is believed to have fled during six months of siege, 50,000 people are still thought to be trapped inside with limited access to food, water, or healthcare.

'Human catastrophe unfolding'

REUTERS/Alaa Al-Marjani"A human catastrophe is unfolding in Fallujah. Families are caught in the crossfire with no safe way out," said Jan Egeland, secretary-general of the Norwegian Refugee Council, one of the organizations helping families displaced form the city.

"Warring parties must guarantee civilians safe exit now, before it's too late and more lives are lost," he said.

The UN said there were reports that the militants were using several hundred families as human shields in the city center, a tactic they have employed in other locations in Iraq. It said 3,700 people had managed to escape the city in the past week.

"Most people able to get out come from the outskirts of Fallujah. For some time militants have been controlling movements, we know civilians have been prevented from fleeing," said Ariane Rummery, spokeswoman for the UN refugee agency UNHCR.

"There are also reports from people who left in recent days that they are being required to move with ISIL within Fallujah," she said.

Soldiers from Iraq's elite Rapid Response Team stopped their advance overnight about 500 yards from the al-Shuhada district, the southeastern part of city's main built-up area, an army commander and a police officer said.

Militants dug in

REUTERS/Alaa Al-Marjani"Our forces came under heavy fire, they are well dug in in trenches and tunnels," the commander said, speaking in Camp Tariq, the rear army base south of Fallujah, 30 miles west of Baghdad.

Reuters journalists in the area could hear explosions from artillery shelling and airstrikes from a US-led coalition supporting the Iraqi forces.

A staff member of Fallujah's main hospital said it received reports of 32 civilians killed on Monday. Medical sources had reported that the death toll in the city stood at about 50 — 30 civilians and 20 militants — during the first week of the offensive, which had yet to involve street fighting.

Foreign aid organizations are not present in Fallujah but are providing help in camps to those who manage to exit.

Fallujah is the second-largest Iraqi city still under control of the militants, after Mosul, their de facto capital in the north that had a prewar population of about 2 million.

Prime Minister Haider al-Abadi announced the assault on Fallujah on May 22 after a spate of bombings that killed more than 150 people in one week in Baghdad, the worst death toll so far this year. A series of bombings claimed by Islamic State also hit Baghdad on Monday, killing more than 20 people.

Political pressure on Abadi

The worsening security situation in the capital has added to political pressure on Abadi, a member of Iraq's Shi'ite majority who is trying to hold a ruling coalition together in the face of public protests against an entrenched political class.

He has called for politicians to set aside their differences and rally behind the army during the Fallujah offensive.

Shi'ite militia groups backed by Iran are also taking part in the offensive against Islamic State but are holding back from participating in the main assault on Fallujah to avoid inflaming sectarian tension.

Reuters journalists saw hundreds of Shi'ite militia fighters rallying at one location near Saqlawiya, a village north of Fallluja still under Islamic State control.

The US is leading a coalition conducting airstrikes in support of the Iraqi government offensive, and it says it is having success in rolling back Islamic State.

In neighboring Syria, US forces have also aided mainly Kurdish fighters who have seized territory from the militants, as has the Russian-backed government of President Bashar Assad.

Fallujah has been a bastion of the Sunni insurgency that fought both the US occupation of Iraq and the Shi'ite-led Baghdad government that took over after the fall of dictator Saddam Hussein, a Sunni, in 2003.

It would be the third major city in Iraq recaptured by the government after Saddam's home town Tikrit and Ramadi, the capital of Iraq's vast western Anbar province, which also includes Fallujah.

(Reporting by Maher Nazeh and Saif Hameed near Fallujah; Additional reporting by Stephanie Nebehay in Geneva; Writing by Maher Chmaytelli and Peter Graff, editing by Peter Millership)

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