▁dis rupted " ▁it . ▁▁ ▁A ▁hand over ▁ceremony ▁on ▁ 2 ▁September ▁ 2 0 0 6 ▁was ▁post pon ed ▁at ▁the ▁last ▁minute , ▁first ▁to ▁ 3 ▁September ▁ 2 0 0 6 , ▁then ▁in def initely , ▁after ▁a ▁dispute ▁emer ged ▁between ▁the ▁government ▁and ▁Washington ▁over ▁the ▁word ing ▁of ▁a ▁document ▁out lin ing ▁their ▁arm ies ' ▁new ▁working ▁relationship . ▁" There ▁are ▁some ▁disput es ", ▁an ▁Ira qi ▁government ▁source ▁said . ▁" We ▁want ▁thorough ▁control ▁and ▁the ▁freedom ▁to ▁make ▁dec isions ▁independently ." ▁US ▁sp okes man ▁Lieutenant ▁Colonel ▁Barry ▁Johnson ▁played ▁down ▁any ▁arguments ▁and ▁expected ▁a ▁signing ▁soon : ▁" It ▁is ▁embar rass ing ▁but ▁it ▁was ▁decided ▁it ▁was ▁better ▁not ▁to ▁sign ▁the ▁document ." ▁Pract ically , ▁US ▁troops ▁remain ▁the ▁dominant ▁force . ▁Their ▁t anks ▁entered ▁the ▁southern , ▁Sh i ' ite ▁city ▁of ▁Di w ani ya ▁on ▁ 3 ▁September ▁ 2 0 0 6 . ▁The ▁show ▁of ▁force ▁came ▁a ▁week ▁after ▁Sh i ' ite ▁milit iam en ▁killed ▁ 2 0 ▁Ira qi ▁troops ▁in ▁a ▁battle ▁that ▁highlight ed ▁violent ▁power ▁strugg les ▁between ▁rival ▁Sh i ' ite ▁fa ctions ▁in ▁the ▁oil - rich ▁south . ▁ ▁Ab u ▁Gh ra ib ▁On ▁ 2 ▁September ▁ 2 0 0 6 , ▁the ▁Ab u ▁Gh ra ib ▁prison ▁was ▁formally ▁handed ▁over ▁to ▁Ira q ' s