Iraqi force enters Basra to disarm tribal fighters - official, sources
"This security operation targets areas north of Basra that have an abundance of tribal clashes and will also include neighbourhoods inside Basra city in the future," said Jabar al-Saadi, head of the security committee at the Basra provincial council.
The majority of crude exports from major OPEC oil producer Iraq come from southern oil fields around Basra.
(Reporting by Aref Mohammed; Writing by Stephen Kalin and Saif Hameed; Editing by Alison Williams)