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Iraqi volunteers from the Yazidi sect take part in a training camp at the Serimli military base, which is controlled by the Kurdish People's Protection Units (YPG), in Qamishli, northeastern Syria on the border with Kurdistan August 16, 2014. Image Credit: REUTERS

Baghdad: Kurdish fighters backed by US warplanes pushed back militants around Iraq’s largest dam on Sunday, as Sunni Arab tribesmen and security forces fought the militants west of Baghdad.

Two months of violence have brought Iraq to the brink of break-up, and world powers relieved by the exit of divisive premier Nouri Al Maliki were sending aid to the hundreds of thousands who have fled their homes as well as arms to the Kurds.

Kurdish fighters were advancing on Mosul dam, which the Islamic State of Iraq and Levant (Isil) militants seized a week ago, but their progress was being hampered by roadside bombs, Kurdish officials said.

The dam on the Tigris river north of Iraq’s second city provides electricity and irrigation water for farming to much of the region.

Its recapture would be the first major prize won back from the militants since they launched their shock offensive in early June, routing the security forces across much of northern and western Iraq.

An AFP journalist saw towers of smoke rising from the dam area on Sunday.

“Half of the Mosul dam area was retaken, the eastern part,” said Kawa Khatari, an official of the autonomous Kurdish region’s largest party.

“They are heading towards Tal Kayf, but the main road was planted with roadside bombs,” he added.

Another Kurdish official, Harim Kamal Agha, said the bombs planted by the retreating militants were slowing the advance.

The US military said it carried out nine air strikes on Saturday in support of Kurdish forces.

US Central Command said warplanes and drones had destroyed or damaged four armoured personnel carriers, seven armed vehicles, two Humvees and an armoured vehicle.

Buoyed by the air strikes US President Barack Obama ordered last week, Kurdish forces have tried to claw back the ground they have lost since the start of this month, when the militants went back on the offensive north, east and west of Mosul.

Anbar fightback

In Anbar province, west of Baghdad, security forces backed by Sunni Arab tribal militia, who threw their weight behind a counter-offensive against the militants on Friday, made gains west of the provincial capital Ramadi, police said.

Fighting was also taking place near the strategic Euphrates Valley town of Haditha, which hosts another important dam, Police Staff Major General Ahmad Sadag said.

The rallying of more than two dozen Sunni tribes to the government side marked a potential turning point in the fight back against the militants and their allies.

The militants were able to sweep through the Sunni Arab heartland north and west of Baghdad in June, encountering little effective resistance, and Iraqi federal security forces have yet to make significant headway in regaining ground.

Anbar was the birthplace of the Sahwa, or Awakening, movement of Sunni tribes that from late 2006 sided with US forces against their co-religionists in Al Qaida, helping turn the tide of that insurgency.

In the north, members of minority groups including the Yazidis, Christians, Shabak and Turkmen, remain under threat of kidnapping or death at the hands of the militants, human rights groups said.