Iraqi forces have taken over security control of the central Shia province of Wasit from the US military, making it the 13th of the country's 18 provinces to be returned to Baghdad.

"We received today the security responsibility of Wasit  province," Mowaffak al-Rubaie, Iraq's national security adviser, said on Wednesday at a transfer ceremony in the  provincial capital of Kut, 160km southeast of Baghdad.

He said Wasit had achieved a level of efficiency and ability in civil and security matters.

The transfer of Wasit comes within a week of the return of nearby Babil province to the Iraqis.

With the transfer of Wasit, US forces will now withdraw to their bases and only participate in security operations at the request of the provincial governor.

'Zero attacks'

Lieutenant General Lloyd Austin, the number two commander of American forces in Iraq, said Wasit was once a route for "enemies to move weapons ... to attack Iraqi and coalition forces."
  

Iraqi forces will now have security responsibilities in Wasit [AFP]

The Wasit handover came as Washington examined changes demanded by Baghdad to a draft agreement covering the long-term presence of US troops in Iraq.

The Status of Forces Agreement (Sofa) would allow US forces to stay in Iraq after their UN mandate ends in December.

Failure to seal the pact or renew the UN mandate would mean US operations would have to be halted.

The draft agreement calls for the withdrawal of US forces from Iraq by the end of 2011 and includes a concession allowing US troops who breach Iraqi laws while off duty and off their bases to face trial.