sentences:  In the fighting in Diyala province an additional 234 insurgents were killed by 14 August beside those killed in operation Arrowhead Ripper, mainly in clashes in and around the town of Khalis.The fiercest of the clashes happened when the U.S.-allied insurgent group 1920th revolution brigade and Al-Qaeda fought a battle at Shrween village in Muqdadiya on 4 July killing 20 members of Al-Qaeda in Iraq.On 14 August, it was announced that the operation ended.